Malicious PDF — malware analysis report

Static analysis result for SHA-256 b325694bae79b17f…

MALICIOUS

PDF

81.7 KB Created: 2021-09-02 03:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: a4cb19e8eb56ad25c18ee42ff19d9892 SHA-1: 47f99bc396e5e90145cfd9d48cf5f952c7e0ef61 SHA-256: b325694bae79b17ffdb2cdbc3a8d54d133dead4df1e8247c6c4c77f310cc8e7d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Numerous external URLs are embedded, suggesting a phishing or malware distribution scheme. The presence of PDF link farm heuristics further supports the attack pattern of directing users to potentially compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://pixomot.ru/uplcv?utm_term=normal+distribution+empirical+rule+calculator PDF link annotation
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/88252598321.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8f5704863---21662308989.pdfIn PDF document text
    • https://bselink.com/userfiles/file/55074834461.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160949c067dca6---61506171560.pdfIn PDF document text
    • http://granitemountainranch.net/userimages/xesabonababunub.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/u723lomrp61iemgk2m1o9327f0/30254048201.pdfIn PDF document text
    • http://pozitron-s.ru/userfiles/file/44267162383.pdfIn PDF document text
    • http://speckrepeg.by/UserFiles/files/94194497711.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3192ebd766---77730849907.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/zekofoz.pdfIn PDF document text
    • http://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/63462906837.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/fdf044pqfq6o57ld5sbchc22q1/24572497463.pdfIn PDF document text
    • https://vetregistr.com/ckfinder/userfiles/files/97731425560.pdfIn PDF document text
    • https://sedefartphotography.com/resimler/files/64827451746.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160b9257746480---21988810031.pdfIn PDF document text
    • https://simondaulte.com/ckfinder/userfiles/files/44830062933.pdfIn PDF document text
    • http://impressivetravelvietnam.com/upload/files/73492514361.pdfIn PDF document text
    • https://chief-moving.com/editor_upload/file/34624791453.pdfIn PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/mnsaruqgs1a5o9u6b7ohiddkjr/ketagalirira.pdfIn PDF document text
    • http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/vejegokopemiba.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/wenusepaludigenawapi.pdfIn PDF document text
    • http://lejuriste.ru/files/file/13624719112.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC62 10892 bytes
SHA-256: a6c27b008e88ae6963fd1208bada97ed2412581af4a66ffeef0c2b4eed587f04
font_02_sfnt_off0001054e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054E 19312 bytes
SHA-256: 731d5e9bdf935d5e10adf479199d1fa72df05d692bc571a6977415606e1ab68b

Open this report in the interactive analyzer, or submit your own file for analysis.