Malicious PDF — malware analysis report

Static analysis result for SHA-256 f90a1e34ef46e016…

MALICIOUS

PDF

66.9 KB Created: 2020-12-01 22:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: bf72de971941a807e48ce1d34a8a9814 SHA-1: 11aae4af9c2976fe574d7e17f99347f91cce7352 SHA-256: f90a1e34ef46e01667f627adf63920c52e52b62b35d382f67f8fb10b1c83127c
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?utm_term=printer+fax+machine+walmart In PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/b6c9a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_5fa457be1dbba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5fb4e0c4b677f.pdfIn PDF document text
    • https://menaxogem.weebly.com/uploads/1/3/4/4/134432074/181124.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/gipis.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/kasibe-mibotuwesetoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426545/normal_5f9808765c49d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc0dd745bcb0228a2824d01/t/5fc55f0beaf37e3b64505e07/1606770443416/66261155657.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf5083ca23154c95ab03b/1606219016311/lamil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc080f7bf71053ccb0e3c67/t/5fc3875fe18c5c478e68d76a/1606649696317/vadoguludunoxin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c9b5085bf90c0efc7ce4/t/5fc10f64bc819f1cf4fd7af8/1606487908876/bobex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c98dbd-753d-46d3-884f-a41754c02881/64807711576.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe189b61e25426e101426d/1606293667065/minecraft_ore_mods_list.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe2666eaf37e3b64650337/1606297191399/zudogapireruporido.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc007006609fd0ee78c7004/t/5fc2c01518e72e5fdb3297f1/1606598678183/55482545836.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD8 4784 bytes
SHA-256: f288e17804852f345149ae31bccd3ed28a1cb09a0f8812f5827750c19dc6cd57
font_01_sfnt_off0000cceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEB 10004 bytes
SHA-256: 01da7c75064b67129a7c36ddb596a7a840c11dc983b35c897b81295099d16c63
font_02_sfnt_off0000ef3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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