Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d648a986bbbd908…

MALICIOUS

PDF

74.7 KB Created: 2021-06-04 07:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 663f3c10df44eff00d253958b65e5029 SHA-1: 542a92ae22bf6310f85ab827690bbec38e9aee91 SHA-256: 2d648a986bbbd908995fa8825b1e017f139712af1df156bed8fb07dee719980e
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://drafthe.ru/pbw?utm_term=warship+battle+mod+apk+season+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476272/normal_5fd3156677ae5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483349/normal_6027286ef0b0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501214/normal_6034009377027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503390/normal_600aecaad9035.pdfIn PDF document text
    • https://vogemafebin.weebly.com/uploads/1/3/4/2/134235603/cf776752.pdfIn PDF document text
    • https://xikuvisaduwobax.weebly.com/uploads/1/3/5/9/135962120/62816c5dc.pdfIn PDF document text
    • https://jatuxifukonexe.weebly.com/uploads/1/3/4/4/134469885/nosokolunana-majumubopavokig-saxopavatudere.pdfIn PDF document text
    • https://nozagovedenide.weebly.com/uploads/1/3/2/6/132682533/1684c.pdfIn PDF document text
    • https://pibazafefudo.weebly.com/uploads/1/3/0/7/130776509/367a8c1dc7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463308/normal_5fd109232435c.pdfIn PDF document text
    • https://vukedezesul.weebly.com/uploads/1/3/0/7/130776134/3504924.pdfIn PDF document text
    • https://woxavadegiw.weebly.com/uploads/1/3/4/9/134902916/derikiw.pdfIn PDF document text
    • https://fulopovesaj.weebly.com/uploads/1/3/0/7/130740112/7979328.pdfIn PDF document text
    • https://litudawugo.weebly.com/uploads/1/3/3/9/133997631/soketerakisufi_josixikot_vokesiperekevo_wevitunin.pdfIn PDF document text
    • https://guvikaki.weebly.com/uploads/1/3/4/5/134519546/bibora.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470226/normal_603d6f6f248ef.pdfIn PDF document text
    • https://gejewesogoj.weebly.com/uploads/1/3/4/6/134612034/guvopata.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403808/normal_60687f6adba7e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4f84c72-0c98-44cf-b36f-17b9267009cc/planeaciones_lainitas_primer_grado_noviembre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a62fd0b5-1373-4c98-8ee1-75e4bfbe8b82/how_to_pair_phone_to_pioneer_mixtrax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f480023-86ce-44db-a55b-d9cbf01ae20c/petsafe_eatwell_5-meal_automatic_dog__cat_feeder_manual.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AE 5580 bytes
SHA-256: 8867b17b1152e95d486efbd0433900dbdb69690e8761e09dc84417ab115b3819
font_01_sfnt_off0000f986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF986 10376 bytes
SHA-256: 12c4f16507d99be751d6657adc72ab536dd1492ef7d380b4460a2b3780a60855

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