Malicious PDF — malware analysis report

Static analysis result for SHA-256 afc1c1659b06c602…

MALICIOUS

PDF

45.9 KB Created: 2020-04-01 18:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 767595ce9cd482153664c0bd87f339f3 SHA-1: 5883856ff6b537146f399185177d4a3e82edea67 SHA-256: afc1c1659b06c602577e673c953df56819c8bfa1b02a6d4fc48824d30791b5ce
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential attempt to distribute malware or phish users through a network of linked domains. No scripts were extracted, limiting further analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 http://buteykobreathing.us/uploads/1/3/0/7/130739886/130739886.html#circuito+de+control+potencia PDF link annotation
    • http://adamdaltonblake.com/uploads/1/3/0/6/130621116/6283543.pdfIn PDF document text
    • http://autodiscover.c3power.org/uploads/1/3/0/4/130436068/zebotosigozadedupero.pdfIn PDF document text
    • http://fayolanaturalz.com/uploads/1/3/0/5/130551059/bototija.pdfIn PDF document text
    • http://lizmeryperez.com/uploads/1/3/0/6/130639315/remurojisasovibajite.pdfIn PDF document text
    • http://grccoin.com/uploads/1/3/0/6/130605048/bajurujaxakopon-bonod.pdfIn PDF document text
    • http://chelseamwest.com/uploads/1/3/1/1/131163920/38185.pdfIn PDF document text
    • http://healthcaresolutionsllc.net/uploads/1/3/0/4/130483650/zuremenob.pdfIn PDF document text
    • http://notforsakenministryinc.org/uploads/1/3/0/3/130323817/7006801.pdfIn PDF document text
    • http://craftsmanmarketing.com/uploads/1/3/0/6/130621019/mirevimuwut-gogesudatarugu.pdfIn PDF document text
    • http://lemondefitness.com/uploads/1/3/1/4/131438617/7589160.pdfIn PDF document text
    • http://maxmtransportation.com/uploads/1/3/0/8/130873949/buxezitenafut.pdfIn PDF document text
    • http://karenov.fr/uploads/1/3/0/6/130604105/41c23.pdfIn PDF document text
    • http://contagiouspositivity.com/uploads/1/3/0/4/130489052/fegesiwo-jebovez-kejutakikekowiw.pdfIn PDF document text
    • http://wingmingexchange.com/uploads/1/3/0/5/130589444/09a0768f.pdfIn PDF document text
    • http://besttowingfresno.com/uploads/1/3/0/5/130589393/gopaw.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: shared payload 80c3329932 4 samples

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_off000074e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E3 8200 bytes
SHA-256: 06216b08209bd8001b71c4c96238edd85880f56c5cfc91ae3ad73903f65caac9
font_01_sfnt_off00009312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9312 16304 bytes
SHA-256: 80c33299320c81568f6bce5f575004607b6a6c0b36da5aa72c9d36ac4e86e521

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