Malicious PDF — malware analysis report

Static analysis result for SHA-256 b002478dbc953991…

MALICIOUS

PDF

77.9 KB Created: 2021-05-10 00:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecc2b1b201e3726cb5b921c32afa1f1a SHA-1: 4d9dae029fcdb224006b288fb225669633e9d018 SHA-256: b002478dbc95399155964e9da326e8543ebb3c3c7c75c68ae6a153f1b3e5671e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the nature of the links and the detection indicate it likely serves as a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mousike.it/img_ins/files/91980543483.pdf
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0afec804a---88325218912.pdf
    • https://lasvegasrebath.com/wp-content/plugins/super-forms/uploads/php/files/7675402a91fd0fa842ef0ef329e6043f/51963981430.pdf
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f58b57eb1f---49865509282.pdf
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f874347418---35317328020.pdf
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf799e66cf---semuvadazifem.pdf
    • http://aylincinarli.com/fckfiles/file/88802420148.pdf
    • https://adepotcustom.com/UploadFiles/file/20210508153231141.pdf
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160807b0b704bd---27242397519.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073e386d0fd7---42300612207.pdf
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce6787ce40---ginujuvuxel.pdf
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608609c26d700---47913164143.pdf
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/545e86c734b07987a1a78ec17b533964/73359396868.pdf
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/qcd8qelf89mv6jkmbjf6km1k6i/devinug.pdf
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/643b892c9e64c23f4d9e0d4a010a9a1f/xitijoxupato.pdf
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984e6f7e74f---tobomilumidakikatige.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b85d6b2474---65217318608.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=winter+activities+worksheets+for+preschoolers
    • 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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e44d.bin
a587f17117b5d15c29d85dfc7995a0c1c2dd4b47ec9dd912267624a3d8d92eb6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE44D 5120 bytes
font_01_sfnt_off0000f5be.bin
10b59af02a81631f37fc22bf798afb27bfd24e79abd2ce32a94c2b35d864f523
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BE 10600 bytes
font_02_sfnt_off000119eb.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x119EB 4324 bytes