Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b4b29540955b16…

MALICIOUS

PDF

80.8 KB Created: 2021-03-15 20:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cab8621d5cdbeddd1db64bf3c5e0a002 SHA-1: efebc6eb860f2cd857632fa7c526a77a3b088420 SHA-256: d3b4b29540955b168101c43ac5ad8615910c919a6ca4dcb0f931d19299d149a8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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
  • 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://jottigo.ru/aws?utm_term=the+graveyard+book+by+neil+gaiman PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486344/normal_5fcb2b0333b38.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/vizio_xrs321_remote11y7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383571/normal_5fe83c790c315.pdfIn PDF document text
    • http://stnold.com/happy_wheels_full_unblocked_weeblycf7gi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412894/normal_6041227d8e695.pdfIn PDF document text
    • http://copyright-rules-help.com/femomxnol0.pdfIn PDF document text
    • http://baffer-shop.space/5923406754zaur1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474471/normal_5ff1b9eb1148c.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/napoledunadigo/behringer_umc22_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/retuxipivifedozamezizike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1457d16-0230-43fd-8bf9-84e73446e1de/zeweferofosoxagigixovega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c67a934a-33b2-4c04-8fc6-48150e635044/47688173352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/325f6766-4345-4b8b-8492-ca841436f79e/84786837627.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6f81822-3f84-4bf0-8c99-d2dbe983fc1f/tiwebilusafunivokinomub.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/2014_cadillac_ats_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c92d8c32-5962-4432-b614-195d320d52b1/romeo_and_juliet_movie_1968_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14158167-f2c3-4646-856f-83db69c32b48/8133233775.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/33148184795.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 5

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_off0000fdc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC4 5376 bytes
SHA-256: e47859dd339ce304220f0203714c81431c0db96abb7009ad03fc80c27a815d21
font_01_sfnt_off00010ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF2 11284 bytes
SHA-256: e0af40f44e93053d4616d77238f505a686037d92c441abe10810f149c0a06b38

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