Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d298c373616028…

MALICIOUS

PDF

72.9 KB Created: 2021-01-16 11:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7f0249b22aa5975d1589837fa11357ca SHA-1: 940449fefdc9194544358a7a15b8c7282058690a SHA-256: d7d298c373616028b83a3d487811d0760d63a141483b5f55fbf46299ec43f08e
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with a high ML classifier score and ClamAV detection indicating malicious intent. The primary URL, 'https://traffnew.ru/aws?utm_term=hashar+movie+audio+songs+free', is likely used to redirect users to malicious content or phishing pages. The document's structure and numerous external links suggest it's designed to lure users into clicking through to potentially harmful sites.

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
  • 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://traffnew.ru/aws?utm_term=hashar+movie+audio+songs+free PDF link annotation
    • https://site-1168049.mozfiles.com/files/1168049/44688391980.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/bashaha/liverpool_echo_breaking_news_twitter.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/nolejudofafefen.pdfIn PDF document text
    • https://litaxavuve.weebly.com/uploads/1/3/4/8/134848922/e6920ceedc4a74.pdfIn PDF document text
    • https://site-1172565.mozfiles.com/files/1172565/metal_radio_stations_chicago.pdfIn PDF document text
    • https://nukuzalidoredul.weebly.com/uploads/1/3/4/7/134768970/6807567.pdfIn PDF document text
    • https://cdn.sqhk.co/volumusigu/WgcEicM/21135539974.pdfIn PDF document text
    • https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/6400664.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368770/normal_5ff913d28eaf9.pdfIn PDF document text
    • https://site-1172264.mozfiles.com/files/1172264/dead_zombie_survival_vr_mod_apk.pdfIn PDF document text
    • https://noxagutut.weebly.com/uploads/1/3/4/4/134483949/04a749803a.pdfIn PDF document text
    • https://site-1174390.mozfiles.com/files/1174390/21101506839.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/75576783715.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/asphalt_8_airborne_free_uptodown.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E4 5308 bytes
SHA-256: 0e28d2e08f5731d2860d5c43b41bda1a7d9cbf9ccdc0ce96d5141de74ba2e43e
font_01_sfnt_off0000f2d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D1 10492 bytes
SHA-256: 41b9a02c2ca3eaee1808b0342b1674846af1d34261477ef74f2d735113ebd0b7

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