Malicious PDF — malware analysis report

Static analysis result for SHA-256 80acc04aabdbfadb…

MALICIOUS

PDF

88.7 KB Created: 2021-08-11 23:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0d7ceaa0665e587af2ce40156c5b542c SHA-1: 5c1afd894a32c262274cf1d0b584ff108debf7f9 SHA-256: 80acc04aabdbfadb300f9836ca1d76dbd2e75b6f83263d40af2480a4703391d9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to various websites, some of which are hosted on compromised WordPress installations. The presence of these links suggests an attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://archism.ru/uplcv?utm_term=2500+calorie+bulking+meal+plan+pdf PDF link annotation
    • http://terralis.eu/catalogue_dynamique/file/67311988623.pdfIn PDF document text
    • http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/65583060285.pdfIn PDF document text
    • https://alperbehang.nl/userfiles/file/53041677888.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/2185b9aa7160c6488a2aa5803c9f7757/saledigugilotugol.pdfIn PDF document text
    • https://tanasiri.com/piceditor/file/84426497291.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/8m2fmf6e95tp2p3gpuc0cj8s5l/47059036975.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f839f3259---vanepunasi.pdfIn PDF document text
    • http://web68s.com/upload/files/40339770187.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160817d1c80404---5740065533.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c5565941845---81978646261.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c888c87cb92---16777062780.pdfIn PDF document text
    • http://northphoenixmustangs66.com/clients/4/4b/4b49b54eec06ebba3741256e9f3e6f2b/File/61682186947.pdfIn PDF document text
    • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/8fe2ad9d718a62d429186402812f5b65/lutasopugazodepozumifog.pdfIn PDF document text
    • http://blissrenewbeauty.com/newerac2c/userfiles/file/17269188169.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/a5f8028817df5c36081e5faa0fd263d7/70409119578.pdfIn PDF document text
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/a79434e66ce28687d4a05384c13ba379/76189772361.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/da81556b4741514786035f5729280277/xarorubawonajojisokekaxi.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160b8204b4bce9---71051209817.pdfIn PDF document text
    • https://uppersanduskyrotary.com/cms/files/File/pamilojapazawijekiso.pdfIn PDF document text
    • http://teplorium.su/userfiles/file/44219958617.pdfIn PDF document text
    • http://begemot-rus.com/uploadfiles/file/2021071804562273499.pdfIn PDF document text
    • https://maryamghiasi.com/images/upload/files/reduzejasexinokepusinolif.pdfIn PDF document text
    • https://giltmorestukko.hu/ckfinder/userfiles/files/vojapugusesadi.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090113e26def---bipesex.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/6761d13f79299848d627cc592bfdd528/11503977703.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_off0000f541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF541 16956 bytes
SHA-256: 336f32bd802f31c30b126b1168be4275c0404e71968bffb4cc3d981a60182cd4
font_01_sfnt_off0001214b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1214B 11308 bytes
SHA-256: 394f2e88a12fb84b01703819e019418ff49055182706303cfeb202aff4914a22
font_02_sfnt_off00013b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B74 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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