Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b08ba8a30de806a…

MALICIOUS

PDF

35.7 KB Created: 2020-05-20 23:11:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2171ff4512839da0b3e0182669b32c68 SHA-1: 41b3b95ffdee14ba8f75c18e92baaedcb54ca4aa SHA-256: 0b08ba8a30de806a70df792ba07777267cd1c3eb1416fd0d611ef42b39dd82b1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution mechanism for further malicious content. The ML_NYX_PDF_MALICIOUS heuristic strongly supports the malicious classification.

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://sellingwva.com/uploads/1/3/0/8/130874669/130874669.html#las+nacionalidades+hispanas+answers
    • http://harrimanpaige.com/uploads/1/3/1/6/131606365/f1ed8cd9.pdf
    • http://smartconnexion.net/uploads/1/3/0/5/130551211/samelofowutuguru.pdf
    • http://osullivanmanufacturing.com/uploads/1/3/1/6/131636935/d4c9f8b735d0e.pdf
    • http://andrewcschaefer.com/uploads/1/3/1/4/131406985/f8ef081419c6.pdf
    • http://logisticenter33.com/uploads/1/3/0/2/130272336/93063a74e02223.pdf
    • http://kay29.net/uploads/1/3/1/4/131453610/fekafikosuvujozatep.pdf
    • http://callthemformeprototype.com/uploads/1/3/0/7/130740443/fodamutuwir.pdf
    • http://biteritebands.com/uploads/1/3/0/7/130739747/07b240841408a7f.pdf
    • http://thomasjonescompany.org/uploads/1/3/0/9/130969686/aaff23dabd6bd43.pdf
    • http://buenavistaconstruction.org/uploads/1/3/0/7/130739598/e6fefa29c.pdf
    • http://aplsprosolutions.com/uploads/1/3/1/3/131384536/munufad_divexoxogowi.pdf
    • http://dominion-llc.com/uploads/1/3/0/6/130620783/ec7552173fd176.pdf
    • http://blinkphotography.net/uploads/1/3/0/7/130775907/kanuv.pdf
    • http://runlakes.com/uploads/1/3/0/8/130814636/guxojif.pdf
    • http://federalcheeseband.com/uploads/1/3/0/5/130545816/feguro.pdf
    • http://williamdilley.com/uploads/1/3/0/6/130620176/3197152.pdf
    • http://markmorganministries.com/uploads/1/3/1/4/131406502/2492984.pdf
    • http://mansmellysocks.com/uploads/1/3/0/3/130313026/2407820.pdf
    • http://wrestleuk.com/uploads/1/3/1/4/131407887/sawisu.pdf
    • http://aryansuku.space/uploads/1/3/0/6/130603958/devepirolaka.pdf
    • http://esbeesignsystems.com/uploads/1/3/0/4/130477083/kuxosubodu_ganadabax_filupinukisa.pdf
    • http://alexandrasimone.com/uploads/1/3/0/6/130604744/xubali.pdf
    • http://localunlock.com/uploads/1/3/0/9/130969480/rogegufojiw-pafakovor.pdf
    • http://jigjogproductions.com/uploads/1/3/0/6/130640236/146dc2.pdf
    • http://cirm-math.mobi/uploads/1/3/0/5/130545334/4760727.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bca.bin
77be4de3af6d99d46e1ed6474ea2142ba4865e055cf509dc3d1566927555518e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCA 11484 bytes

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