Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc942f8ccd28653…

MALICIOUS

PDF

40.9 KB Created: 2020-04-03 06:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 689f543709e1d52f2bdc4e25cd72d79c SHA-1: 4fcc9b70062c7b9ecdbb822e86c78d133990e793 SHA-256: 2fc942f8ccd28653bd7b63b1166cf38614822c32ed037f75b8a482acb702de47
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The primary heuristic identified a "PDF_SEO_LINK_FARM" with 30 external links, suggesting an attempt to manipulate search engine results or redirect users to potentially harmful sites. The document body itself is heavily obfuscated and contains some of the same URLs, reinforcing the link-distribution pattern.

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://prettyinmiinkk.com/uploads/1/3/0/6/130622038/130622038.html#sin%C3%B4nimo+de+nessa+perspectiva PDF link annotation
    • http://naturebandz.com/uploads/1/3/0/2/130292014/xoxexuredo_nesebena.pdfIn PDF document text
    • http://trataka.se/uploads/1/3/0/3/130324170/9629809.pdfIn PDF document text
    • http://delgadojennifer.com/uploads/1/3/1/4/131407439/jereropuviwupuked.pdfIn PDF document text
    • http://sigillab.com/uploads/1/3/0/2/130271217/7749252.pdfIn PDF document text
    • http://aimeelora.com/uploads/1/3/1/3/131382595/ba347a96.pdfIn PDF document text
    • http://digitalhustleblueprint.com/uploads/1/3/0/7/130739508/4951383.pdfIn PDF document text
    • http://hempedibleking.com/uploads/1/3/0/6/130605498/2dc3c1f02.pdfIn PDF document text
    • http://fireflyagencytx.com/uploads/1/3/0/4/130476078/55a703.pdfIn PDF document text
    • http://oanorthrivers.maryhigginswebdesign.com/uploads/1/3/0/6/130620348/mexuvamilomo.pdfIn PDF document text
    • http://cleancarpetspeoria.com/uploads/1/3/1/0/131070147/ecef00.pdfIn PDF document text
    • http://alphamaxtax.com/uploads/1/3/0/7/130776363/7904737.pdfIn PDF document text
    • http://mail.comeandseefbc.org/uploads/1/3/0/5/130543059/jitogabekuvigi_nutuvugebo.pdfIn PDF document text
    • http://hanukkahrv.com/uploads/1/3/0/4/130483194/vopemidedejud_dopen_sezedorugawaper.pdfIn PDF document text
    • http://fsc-nationwide.com/uploads/1/3/0/8/130874485/nasipefuba_xafijalurevov.pdfIn PDF document text
    • http://pastel-pops.com/uploads/1/3/0/6/130639092/muxawekotedikiz-norafutizipita-rijimakamiret.pdfIn PDF document text
    • http://emeraldtrianglefarm.info/uploads/1/3/0/2/130272415/6262080.pdfIn PDF document text
    • http://jabbottphoto.com/uploads/1/3/1/3/131381435/77d617605086.pdfIn PDF document text
    • http://solidballoon.com/uploads/1/3/1/0/131069808/ba27fa54c.pdfIn PDF document text
    • http://crossroadseastnorthport.com/uploads/1/3/0/4/130476288/e7d18393.pdfIn PDF document text
    • http://springbankmedia.com/uploads/1/3/0/6/130639973/nepepolu.pdfIn PDF document text
    • http://vn-nhan-tien-quoc-te.online/uploads/1/3/0/5/130588702/068ba0.pdfIn PDF document text
    • http://patriotkelly.com/uploads/1/3/0/8/130873710/pufet-pedunakudeloj.pdfIn PDF document text
    • http://grandpasmagicmargarita.com/uploads/1/3/0/2/130272342/3703320.pdfIn PDF document text
    • http://ltchelp.com/uploads/1/3/0/5/130588622/solimerelubib_mofubotofi_lamafume_jalug.pdfIn PDF document text
    • http://redfoxrefinishing.com/uploads/1/3/0/8/130814083/xupesirerexumex.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

Related samples 3

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_off00007677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7677 8636 bytes
SHA-256: c90dec140aa6cf60447ea4c4d10834206d5c81d0ff84fe67e22eac5494d83c9d

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