Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaac46316b0cbcda…

MALICIOUS

PDF

31.4 KB Created: 2020-05-26 05:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: a1394f2af69ebd576d5746298930a7ac SHA-1: c21147f2e0e3ef6add55e232e4c3accb24e9d8e6 SHA-256: eaac46316b0cbcdaf3ee5b970a82e4f8bcbd580d32741532463d2a783d7360e7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document is identified as malicious by an ML classifier. It contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body suggests a lure related to a car owner's manual, likely to trick users into downloading further malicious content or visiting compromised sites. The primary attack pattern involves SEO link farming and potentially hosting malicious payloads on numerous subdomains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://astagreatlakes.voyagerwebsites.com/uploads/1/3/0/6/130604758/130604758.html#2004+toyota+camry+xle+owners+manual PDF link annotation
    • http://robinstevensreps.com/uploads/1/3/1/4/131453021/ruwaxudubik.pdfIn PDF document text
    • http://koepkesalesllc.com/uploads/1/3/1/3/131384708/1c49234093.pdfIn PDF document text
    • http://burntwooddesigns.com/uploads/1/3/1/1/131164097/1f184d.pdfIn PDF document text
    • http://ompeacelove.com/uploads/1/3/1/3/131383936/lutudezetiresi_worubixudufun_darufalazi_zifurunedewofen.pdfIn PDF document text
    • http://drhiltonkaplan.com/uploads/1/3/0/2/130274097/rotafu-fakitutug-fulolewogel.pdfIn PDF document text
    • http://ouestartup-guest.xyz/uploads/1/3/0/3/130379928/1640723.pdfIn PDF document text
    • http://circuitriderscowboychurch.org/uploads/1/3/1/3/131383333/zakajinig.pdfIn PDF document text
    • http://revistavounarepresentes.com/uploads/1/3/0/6/130621061/6aabc84.pdfIn PDF document text
    • http://sourcemappingurl.net/uploads/1/3/0/6/130639236/ef391eb.pdfIn PDF document text
    • http://chi-branding.com/uploads/1/3/1/3/131383426/zosidadog-lulojepukiwu.pdfIn PDF document text
    • http://optimabatterieshub.com/uploads/1/3/0/8/130874110/1605361.pdfIn PDF document text
    • http://cumachera.org/uploads/1/3/0/8/130814254/073dcd2c.pdfIn PDF document text
    • http://barbizu.com/uploads/1/3/1/4/131410370/tiweboku.pdfIn PDF document text
    • http://templebnaiisraelnatchez.org/uploads/1/3/1/4/131454383/1310799.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EEB 10284 bytes
SHA-256: e35f8aababda920e6b5a74e6d56d1490d0b3cf7925fef9fe0b56008b1cd47c8e

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