Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f86a04c27ad287…

MALICIOUS

PDF

83.4 KB Created: 2021-06-25 18:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 265a5a7c50b2bf0d3b16cce99b003be4 SHA-1: 493618d6a06e463b01ddf71f8ae7feeeace97fec SHA-256: 96f86a04c27ad2876f2975ba27db46f7d3f9af2feec2b7d7137e104a9cd185dd
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to multiple URLs hosted on compromised WordPress sites, likely intended to distribute further malware or redirect users to phishing pages. The presence of numerous unknown URLs suggests a broad phishing or distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984799ae086---23168819934.pdf
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/160856696bed0f---72929023023.pdf
    • http://chromoink.com/updates/file/90855366615.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1f22a56d3---53083106487.pdf
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/2vve4dma3esngk3v3k0l1egb83/82195077009.pdf
    • https://acronimocostanzo.com/userfiles/file/xoredakalakuxugelaxemajub.pdf
    • http://hzdsbg.com/uploadfile/1622939212.pdf
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210529221711.pdf
    • http://t-p-fortune.com/userfiles/file/bowixi.pdf
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/p5h7duvqq8sujdfi8siu7su2n5/34428482440.pdf
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/zererubawetujesibinutov.pdf
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/lfstodeaq4nqn589sskb1rr4lk/14897421518.pdf
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b57b3adbe---jewurovinimadavipafi.pdf
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098369c22163---kakawaxomikavatosekiji.pdf
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b59aad15ef4---77565664255.pdf
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b268bc0b4---xelidovilutokulewo.pdf
    • http://ansonseatery.com/uploads/files/parulakuletijewaligur.pdf
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/ateojif8jqr6spcbk0m4dm3kq9/19561426684.pdf
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b0359787d39---kuzufakogosipodokazosata.pdf
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a26327424b5---xoxifewakatumotib.pdf
    • http://asbufestival.com/uploads/FCK_files/file/1342648443.pdf
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b978779a71---ridaboreravakuvasepuf.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=compare+and+contrast+natural+science+and+social+science
    • 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_off0000e0fb.bin
99f65e7d43f6bead049da9d5108c5ee12f85b9324dd9e32ce25a2480f95ab6c2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FB 17104 bytes
font_01_sfnt_off00010ced.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CED 16792 bytes
font_02_sfnt_off00012504.bin
e3e2f4c00c94cce850c82147f8e14fb2ba1639764d9e5eaf0bba6da8bab4d737
pdf-font-stream PDF embedded font (sfnt) at offset 0x12504 10804 bytes