Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc3024181406436…

MALICIOUS

PDF

41.1 KB Created: 2020-03-07 22:39:20 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 2635049a7805674521ef595ab1be5a11 SHA-1: 37624b4984cc8ebfee8a8d64f58226b9a7c2eecf SHA-256: 3bc30241814064364539b87a91f50d266df4936581e7dcf87d965103ab8e1aa0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to other PDFs hosted on various domains. This suggests a link farm or redirection strategy. The ML classifier strongly indicated maliciousness. The primary attack pattern involves directing users to a network of SEO-optimized PDF files, likely for traffic generation or further malicious redirection.

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://intranet.tfcrecycling.com/uploads/1/3/0/6/130639954/130639954.html#blender+2.8+texture+paint+tutorial PDF link annotation
    • http://www.loumurreyphotography.com/uploads/1/3/0/8/130813428/nafipevefatadakini.pdfIn PDF document text
    • http://autodiscover.maxalarms.com/uploads/1/3/0/3/130379061/142160d.pdfIn PDF document text
    • http://bestelectricskateboard.net/uploads/1/3/0/7/130740050/lepawanal-kupidoruga.pdfIn PDF document text
    • http://caratcoffee.com/uploads/1/3/0/6/130620788/4684530.pdfIn PDF document text
    • http://assortedartistries.net/uploads/1/3/0/7/130775528/0219d4203092f2a.pdfIn PDF document text
    • http://salesinquirynowfor.com/uploads/1/3/0/3/130379696/kotipobatafizej.pdfIn PDF document text
    • http://mx.mccoypta.org/uploads/1/3/0/4/130490078/5896547.pdfIn PDF document text
    • http://www.kristinbly.com/uploads/1/3/0/9/130969831/gosojok_pidilegifideg_ledox_makidelo.pdfIn PDF document text
    • http://www.ericscottwrites.com/uploads/1/3/0/6/130604363/2491617.pdfIn PDF document text
    • http://camanomanor.com/uploads/1/3/0/2/130270987/lapib.pdfIn PDF document text
    • http://elizabethbrokamp.com/uploads/1/3/0/5/130539926/9271378.pdfIn PDF document text
    • http://cassandra-key.com/uploads/1/3/0/9/130969937/8891012.pdfIn PDF document text
    • http://cachedistrictliteracy.org/uploads/1/3/0/6/130603954/raset_nevebotilo.pdfIn PDF document text
    • http://remade.info/uploads/1/3/0/4/130489128/3991088.pdfIn PDF document text
    • http://www.hancockinspectionsllc.com/uploads/1/3/0/8/130814004/fadel_xezanomazus_ravul.pdfIn PDF document text
    • http://connectingstrategies.nl/uploads/1/3/0/5/130590778/9870753.pdfIn PDF document text
    • http://www.theyogaden.net/uploads/1/3/0/5/130589278/gukufimax.pdfIn PDF document text
    • http://jls-art.net/uploads/1/3/0/7/130775953/kodofomuliseze.pdfIn PDF document text
    • http://enerrgygroupuniversity.com/uploads/1/3/0/6/130604529/672779.pdfIn PDF document text
    • http://moretoexplore.co/uploads/1/3/0/7/130775832/8ca932f7c4.pdfIn PDF document text
    • http://getfantasticweed.com/uploads/1/3/0/6/130604168/d8e1d18bb.pdfIn PDF document text
    • http://gozutashoya.com/uploads/1/3/0/2/130288399/7132470.pdfIn PDF document text
    • http://gazeatmypixels.com/uploads/1/3/0/7/130775592/fonutonadomakup.pdfIn PDF document text
    • http://cetlgroup.org/uploads/1/3/0/5/130590371/8669382.pdfIn PDF document text
    • http://mrsvoigtsclassroom.com/uploads/1/3/0/4/130490399/109b130b7.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_off0000783f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783F 7800 bytes
SHA-256: 4cc7af9fb2a8be02b8b8fb3fba765bf2e635ef7bc078b449ede559238219c2aa

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