Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e14747ddfb31401…

MALICIOUS

PDF

104.8 KB Created: 2021-08-01 03:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fee8c91b972eaf00594eba3e89a289f6 SHA-1: a13d1243b8740a8efb468e63682b7974547294d5 SHA-256: 0e14747ddfb31401d9a2696bfbb15e4ffb6089da9fe87b52a3cbb0d935fd6342
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm directing to multiple URLs, some hosted on compromised CMS uploads, indicating a potential phishing or malware distribution scheme. ClamAV detection and ML classification strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of numerous external links and the nature of the heuristics point towards a malicious document designed to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 7

  • 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.
  • 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://pasarantogel.com/contents//files/sazefosunolikofini.pdf
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbe4101891---xukexaveka.pdf
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/dtg739tksj4r7061648p7ar2h6/57139622067.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/91ff28e1c2860c645532402d05b9edfa/51125703874.pdf
    • https://al-farh-iq.com/upload/userfiles/file/8712584052.pdf
    • https://cgeminfos.ma/upload/file/poximikuzadibojenomes.pdf
    • http://t-p-fortune.com/userfiles/file/sejasipifisob.pdf
    • https://bda.ch/ckfinder/userfiles/files/fimurixovepatar.pdf
    • https://finatwork.com/userfiles/file/pubofitujibanutolajumoki.pdf
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ae07ae807---terawanovizinomakojo.pdf
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc3ce7743b---92464678416.pdf
    • https://egokituz.eus/files/galeria/files/ripapilebadaginofimudixi.pdf
    • http://alfavit.tv/userfiles/file/rokaxukivotajul.pdf
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/7c69ecaf1f3dc70c3306de2b7db1ff47/96751869834.pdf
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/68141865257.pdf
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/6c803869e5827c2f0bb86d71024e6e87/54888799901.pdf
    • http://aitrans.cn/UploadFile/file/F1202105300456538279.pdf
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/ef6eff400d2ab4b91440489a2633509f/55859321306.pdf
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/42fc3b07c49cf5946a4f7d6dd1cced4a/xulubusoxu.pdf
    • http://marcelponjee.nl/ponjeefiles/file/34513503979.pdf
    • http://solsethreunion.com/clients/f/f5/f56c6d7ba488b74ef40bd02d3fc4d0b2/File/pomobujebem.pdf
    • https://securitydm.com/slicice/file/3877294806.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=world+history+fall+semester+exam+review+answers
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001341f.bin
287dc1c0ce6038fc19895220a157e1640ac21063adb70dd53bb602424120e1b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1341F 10980 bytes
font_01_sfnt_off00014d82.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14D82 16792 bytes
font_02_sfnt_off00016594.bin
beec26676f1dce2474e887fa153aad51dfea791767f63df2b1716c66709ebd02
pdf-font-stream PDF embedded font (sfnt) at offset 0x16594 17888 bytes