Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a89e141933f7b18…

MALICIOUS

PDF

113.7 KB Created: 2021-06-17 01:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 76d1806727e3c5c21dbbbb9bae019447 SHA-1: 01502f36f14ca091e9ce95d3955b1cf507122b13 SHA-256: 0a89e141933f7b1839eca5c5a529c25bd8648adc7f9071363dc18db14a63d0b3
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites, suggesting a link farm or SEO poisoning tactic to lure victims. The presence of a 'download' button lure and ClamAV detection further indicates malicious intent, likely to deliver a phishing or malware payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://allytemp.ru/uplcv?utm_term=lexicon+ethics+book+pdf+download PDF link annotation
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16080e6d7d59cc---bozixututedugulosop.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722efa23e86---32724242216.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/6spaf9380eeebovi9gamqjqmfn/tazosisafovurofafede.pdfIn PDF document text
    • http://jdhs77.com/clients/58520/File/giwadevudazejatera.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/b36d8d3f960718ce513fef7af5ab87e1/8543632267.pdfIn PDF document text
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/n0lnscbebfjrt1uqojs1iq26v4/lilolog.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/fc3a31c4284f5b4a020b0d645363226b/zavizapevugagapibikad.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/62742460524.pdfIn PDF document text
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/00ba3a33c92df16a16db2938cd0bb49a/xanesunutaregujubepevoda.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160887f87d1495---rudamazural.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/d746584d39bafca3e272b96bf277ccae/96047623413.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/milumekovavixanona.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/f08116b99e259272ed629ff9d3c106be/kojatizaxovefasi.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/10b239f2351c2eae0dc97751e1dae37b/8511861086.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/inkj7lunvlf19kob31hv03r3m5/dizebifuvolizojif.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef4ed7853f---77829607459.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00018447.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18447 18048 bytes
SHA-256: 6b2ffc7f1ff4288b7c08fc9b46e94e34e1a6a83c166d939b2eaccf11a2002f6f
font_00_sfnt_off00013183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13183 5240 bytes
SHA-256: b45b8794b43cffad987ed696cac57fccf824db8fb14a36e7083b840004d71ec7
font_01_sfnt_off00014354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14354 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off00014eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EB8 11616 bytes
SHA-256: abe57e2983b0da946e7fc2a3fcf2df7e2e0100a8b6e03d48df3ea744116a1cfc
font_03_sfnt_off00017645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17645 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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