Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3fe999e8aa8bc4c…

MALICIOUS

PDF

83.7 KB Created: 2020-11-24 17:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 88949abe4383b9bd67c983ec92cf0044 SHA-1: 4d80618ab340795a9813bcc4f1785d5920c037c0 SHA-256: f3fe999e8aa8bc4ca1264be580c3765999f9a676e185ecf1eb882a03fc75f924
156 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, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution vector, likely leveraging a PDF exploit or social engineering to redirect users to the primary malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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/strik?utm_term=agustin+reyes+ponce+proceso+administrativo PDF link annotation
    • https://dudakodut.weebly.com/uploads/1/3/4/4/134497067/27836060b4b89a.pdfIn PDF document text
    • https://jowamevo.weebly.com/uploads/1/3/4/5/134511132/2080bdf77096.pdfIn PDF document text
    • https://rikurifijuse.weebly.com/uploads/1/3/4/6/134681474/4130a012120f.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/5711585.pdfIn PDF document text
    • https://jusemeki.weebly.com/uploads/1/3/4/5/134506960/mugoteg.pdfIn PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/lorubavevotu.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jadere/facebook_business_cover_photo_template_psd_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/jatedotijivukerajufavu.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/4721768601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f86fee8-58f4-40ec-9173-29108917b6a5/lfx25973st_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/bridgman_head.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4297b980-e192-45ed-9926-63bb4df51a5c/jizodugufunekubik.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/anticipatory_bail_application_format_for_498a_ipc.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/lg_vn270_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

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_off0000fe8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8F 1696 bytes
SHA-256: cc26db66b3b254511b4b0a652671ba0044399e9ed405473d5ddf01ce3b58dcc8
font_01_sfnt_off000106fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FD 5512 bytes
SHA-256: 89b631db82f190bb5c7c32f67f91bb66c21b4a0c7f30935f909eda5757b4c79c
font_02_sfnt_off000119bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119BF 11684 bytes
SHA-256: f0e017961b50a317b52e6be108aecec2578d447ce215fbcf20744bc27964348e

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