Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6bd64398dbd573…

MALICIOUS

PDF

32.1 KB Created: 2020-06-20 02:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 7d08cc2a25a87258969722368a28668b SHA-1: eda95c77d431502a40626c171efd1bdae0a0a01f SHA-256: 7e6bd64398dbd573b05c8666d82b97cd9116f8814b6bc03b57256b7e7e5a4c47
116 Risk Score

Malware Insights

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

This PDF document employs an image-only lure, presenting a screenshot of a manual to entice users to click a link. The linked URL and numerous other embedded URLs point to a large collection of SEO-optimized PDF files, suggesting a link farm or a distribution point for malicious content. The ML classifier strongly indicates maliciousness, and the structure points towards a phishing or content-distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 32 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://candcrodshop.com/uploads/1/3/0/6/130605405/130605405.html#plc+s7+200+siemens+manual PDF link annotation
    • http://fairleetv.com/uploads/1/3/0/5/130588497/ganevuzorakizanokitu.pdfIn PDF document text
    • http://stuffedgourmet.com/uploads/1/3/1/4/131453294/merekuvugagirimefo.pdfIn PDF document text
    • http://thearizonawoofgang.com/uploads/1/3/0/5/130590399/falavamunuza_xemajagob_dovekevose.pdfIn PDF document text
    • http://good-news-now.com/uploads/1/3/0/6/130620990/jukawogutugi.pdfIn PDF document text
    • http://cpcalendars.themagic-box.com/uploads/1/3/1/4/131453174/jamafusoju.pdfIn PDF document text
    • http://sunscreenfilmsociety.com/uploads/1/3/1/4/131438692/987fc0a7f70.pdfIn PDF document text
    • http://madmoninadlan.com/uploads/1/3/0/7/130739809/f3a935635b111.pdfIn PDF document text
    • http://empresssimonsez.com/uploads/1/3/1/3/131380625/4776012.pdfIn PDF document text
    • http://mta-sts.mx.afreshlookatfitness.com/uploads/1/3/0/7/130776445/399759.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00004a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A20 4896 bytes
SHA-256: 7f2f3c79942d87c43c89e98178fdeed99134c5c5397cde831e6d18d15b10e6a8
font_01_sfnt_off00005a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9D 7676 bytes
SHA-256: d857bd556d1835d60ef8119721a666a8d5b17efd0dc7d7819eb96b06bfb64fc8

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