Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c097782c8961f2…

MALICIOUS

PDF

40.2 KB Created: 2020-05-21 18:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adcd2efc2c56b7195c71170c581fd04f SHA-1: f301b76f0dc8e6f24d9e00e9270965ee37f2fc21 SHA-256: 69c097782c8961f2ffa28992149af8148da2c1234fa492711fe9a490c97183c3
104 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, embedding a large number of external links, many of which point to other PDF files. The document body, though partially corrupted, contains text suggesting it is a 'Volvo vnl 780 repair manual', likely a lure to encourage downloads. The presence of numerous external links, including one directly to an HTML file, indicates an attempt to redirect the user to potentially malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://host45.carmichaelnl.com/uploads/1/3/0/4/130476632/130476632.html#volvo+vnl+780+repair+manual
    • http://schmabaret.com/uploads/1/3/0/8/130874262/6850579.pdf
    • http://thebabyclique.com/uploads/1/3/1/3/131398053/54353272e.pdf
    • http://southernseasonslandscape.com/uploads/1/3/0/6/130639226/sivalamu.pdf
    • http://kellyntrapp.com/uploads/1/3/0/7/130738777/5494776.pdf
    • http://stephenbaccari.com/uploads/1/3/1/0/131069838/boveb_gawozaj_zasupaje_nivawaw.pdf
    • http://cgonline.org/uploads/1/3/1/8/131856293/renofofab-liribiwu-gukenokive.pdf
    • http://therookieroundtable.com/uploads/1/3/0/8/130814788/mevawixubata.pdf
    • http://intentionaluxr.com/uploads/1/3/0/7/130776358/kuzumaxigaxirez.pdf
    • http://bouncycastlehirehereford.com/uploads/1/3/1/3/131383893/875881.pdf
    • http://amaiyahelpinghandsfoundation.org/uploads/1/3/0/5/130588625/f8ce31fcf8472.pdf
    • http://northdeering.org/uploads/1/3/1/3/131379530/5868180.pdf
    • http://dagoch.net/uploads/1/3/0/4/130435738/xeruk.pdf
    • http://claycityimperialregiment.com/uploads/1/3/1/1/131164236/dd3a40221c2.pdf
    • http://buildabettie.com/uploads/1/3/1/3/131380870/4147e0c9a2.pdf
    • http://joliestripes.com/uploads/1/3/0/5/130540461/zijoruwilat.pdf
    • http://cvkelectric.com/uploads/1/3/0/3/130323186/razola.pdf
    • http://stackastorybookshop.net/uploads/1/3/0/7/130776539/joluvufigoxa-pedofidanekobux.pdf
    • http://alexmechanical.net/uploads/1/3/0/3/130313027/gepuwunasejokim-sowifolarul-memuxuguroto-roxixurevazopib.pdf
    • http://hkrata.org/uploads/1/3/0/9/130969154/b4bd2addb6f2ca.pdf
    • http://awningsfarmington.com/uploads/1/3/0/4/130435955/rujuxeparovadanilo.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_off0000703b.bin
6bd8d471c2e7135f0c318a93641752c19eda9ff11af8d97118e0ee97cf6a6ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703B 10760 bytes

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