Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ab0cad17d104a8…

MALICIOUS

PDF

50.8 KB Created: 2020-03-20 13:22:10 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2a92a449fcca7d577bac1c66e84eca06 SHA-1: ac7ebab0de9f8b1233b0ca65c5f4f0a445288036 SHA-256: 70ab0cad17d104a82f2dbcdcb33c48749133d5c69a28e7c964b5ddb5a6088138
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body also contains a prominent URL, likely intended to direct the user to a malicious resource. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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://joeandfelicitysimplydone.com/uploads/1/3/0/6/130621780/130621780.html#dean+ornish+ted+talk+youtube
    • http://stgeorgestucco.com/uploads/1/3/0/4/130477805/pegenobokamofozuse.pdf
    • http://zyrko.net/uploads/1/3/0/5/130543600/sijumirolewuxofepopu.pdf
    • http://www.the-remappingcompany.co.uk/uploads/1/3/0/4/130489475/7b1c491a12c8dd.pdf
    • http://jasonseto.com/uploads/1/3/0/7/130776304/letunelexu.pdf
    • http://pokeylizardcreations.ca/uploads/1/3/0/2/130287997/rozutasiwodovib_jofupubirojavef.pdf
    • http://dwsignatureplates.com/uploads/1/3/0/5/130589004/38e14225ea793.pdf
    • http://maritimeinsights.com/uploads/1/3/0/6/130604144/699067.pdf
    • http://bsmithcontracting.com/uploads/1/3/0/7/130740490/malowusukokipo-legum-wigopumo.pdf
    • http://wellnessclub.blog/uploads/1/3/0/2/130271099/tovobab.pdf
    • http://www.dfwtri-star.com/uploads/1/3/0/8/130874318/lojasam.pdf
    • http://adan.pt/uploads/1/3/0/2/130289002/1930233.pdf
    • http://cashshit.us/uploads/1/3/0/5/130539016/wekivutot.pdf
    • http://yulexperience.com/uploads/1/3/0/2/130272493/8608559.pdf
    • http://modtran7.net/uploads/1/3/0/2/130289524/bebotiti.pdf
    • http://blessedtexandesign.com/uploads/1/3/0/6/130621597/1068220.pdf
    • http://millymop.co.uk/uploads/1/3/0/5/130551824/zufevewivitidiwom.pdf
    • http://atouchofclaas.net/uploads/1/3/0/6/130640200/maxaba-wisegun-juwewevuta-wufegavi.pdf
    • http://seanaudleylaw.com/uploads/1/3/0/7/130738847/risixipe.pdf
    • http://resolutionfit.net/uploads/1/3/0/8/130814859/fukararurinok_pavis_bazupilu_wuwilitinitujok.pdf
    • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009f8a.bin
34f41970ec17f8333eb02ccc0f6b521e87aab316365ba7141269698893e855be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F8A 7668 bytes

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