Malicious PDF — malware analysis report

Static analysis result for SHA-256 af771f0dceff18bb…

MALICIOUS

PDF

38.8 KB Created: 2020-05-15 07:55:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: a2d6e25c13b7afbbb576aca3404685b0 SHA-1: c5170d585a6252a20e71d48526b1722ef8314e7c SHA-256: af771f0dceff18bbd219887adbaa75e4f984adec39ea06fbe7f3e9a37d84c8fe
96 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, with a large number of external links pointing to other PDF files. The document body mentions 'Delhi traffic challan app', suggesting a lure to trick users into clicking on these links. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent behind the link distribution.

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://jessicalgervaisbooks.com/uploads/1/3/0/4/130483869/130483869.html#delhi+traffic+challan+app PDF link annotation
    • http://faithviewhc.com/uploads/1/3/0/2/130291355/keluruxul_kiwuxe_ratakabatetusa_nemewezijok.pdfIn PDF document text
    • http://theodorefeldmann.net/uploads/1/3/0/6/130621153/c8b26d.pdfIn PDF document text
    • http://twitterforsocialworkers.com/uploads/1/3/0/6/130621194/wadifilowi.pdfIn PDF document text
    • http://pppsanitation.com/uploads/1/3/0/3/130313194/3807101.pdfIn PDF document text
    • http://ryanandkristy.com/uploads/1/3/1/4/131406663/15154f3.pdfIn PDF document text
    • http://syracusenyapartmentrentals.com/uploads/1/3/0/2/130289218/9305252.pdfIn PDF document text
    • http://marthasvineyardblowdry.com/uploads/1/3/0/5/130551551/noboza-xirap.pdfIn PDF document text
    • http://osha10hr.net/uploads/1/3/1/4/131438086/telad-mujofazuxoko-fabegowufo-guxijazut.pdfIn PDF document text
    • http://kennesawproperties.net/uploads/1/3/0/5/130552017/nenimusem.pdfIn PDF document text
    • http://webmj.us/uploads/1/3/0/8/130814706/kuduzowolimolep.pdfIn PDF document text
    • http://fll-niger.com/uploads/1/3/0/5/130544746/refagekufipik.pdfIn PDF document text
    • http://imsewisrael.com/uploads/1/3/0/5/130539726/8504132.pdfIn PDF document text
    • http://sparrowhomebuilders.com/uploads/1/3/0/8/130874079/kiditutixu_xutukomaw.pdfIn PDF document text
    • http://churchplantercoach.org/uploads/1/3/0/4/130488429/fiwafagomido_wekoparewe_kimagurerez_tevotugajuwag.pdfIn PDF document text
    • http://wheelerldealer.com/uploads/1/3/0/7/130776750/2020195.pdfIn PDF document text
    • http://iezrareresources.com/uploads/1/3/0/7/130739802/3944119.pdfIn PDF document text
    • http://greypitinc.com/uploads/1/3/0/6/130621179/7c458b60f2fe8.pdfIn PDF document text
    • http://intransitlimited.com/uploads/1/3/0/4/130491322/naduwebenulase.pdfIn PDF document text
    • http://sowens.tv/uploads/1/3/0/7/130775551/xovemesadir-lagojinog-kiresuzabisesu-nofuvozogan.pdfIn PDF document text
    • http://avhealing.com/uploads/1/3/0/4/130488365/jijabamomexekekizi.pdfIn PDF document text
    • http://myoshs.com/uploads/1/3/0/7/130775593/xinoz_mozato_manapokiwetobu.pdfIn PDF document text
    • http://advancedrcs.com/uploads/1/3/0/6/130639115/2ceb21108a65.pdfIn PDF document text
    • http://fesnp.org/uploads/1/3/0/9/130969809/pexusarixapak-gomujel.pdfIn PDF document text
    • http://scentzbytee.com/uploads/1/3/0/6/130620168/a295d9d7.pdfIn PDF document text
    • http://dreamcityhealing.co/uploads/1/3/0/2/130289418/3825189.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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_off00006bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCD 10384 bytes
SHA-256: 7f3b4b994778c56b0412b606300ec04b4b56de00486006573b1f5e86ef4f5fbe

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