Malicious PDF — malware analysis report

Static analysis result for SHA-256 07392b708f701020…

MALICIOUS

PDF

37.4 KB Created: 2020-05-13 20:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 911564af38d257775576b4605bc42740 SHA-1: 110488191d4dd10cf7dd55151971f334fa253253 SHA-256: 07392b708f70102023100db0919f6aeb002f4378ec03d058183be5cc8aa38683
116 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a link farm, which is a common technique for SEO manipulation or distributing malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous URLs suggests an attempt to redirect users to potentially harmful sites. No scripts were extracted, but the sheer volume of outbound links is highly suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://1stopcard.com/uploads/1/3/0/4/130483204/130483204.html#arvada+co+sales+tax+form
    • http://orliconsulting.com/uploads/1/3/0/8/130873908/0ca378c.pdf
    • http://molliemonahan.com/uploads/1/3/0/6/130622011/bebeseje_torubobuxoxe.pdf
    • http://deeprootsmaine.com/uploads/1/3/0/7/130739162/pumuf.pdf
    • http://adivasi.com/uploads/1/3/0/8/130874313/dibezalapejejozomumo.pdf
    • http://abrahamgrowth.net/uploads/1/3/0/8/130813269/7191644.pdf
    • http://hiatthallconsulting.com/uploads/1/3/0/7/130739333/9904946.pdf
    • http://blaynebaker.com/uploads/1/3/0/7/130776031/mosaxajimede.pdf
    • http://electrotech.vip/uploads/1/3/0/6/130605248/nibafepimolinamug.pdf
    • http://vjpoppins.com/uploads/1/3/0/6/130621831/kitijojepa.pdf
    • http://originalsoftwaretechinc.com/uploads/1/3/0/8/130814845/jidepesozawe-wuzux-kopuwanid-nofiwabudar.pdf
    • http://katskreations.org/uploads/1/3/0/9/130969247/92e55.pdf
    • http://fccdiscipleship.org/uploads/1/3/0/2/130272350/228211.pdf
    • http://godissorry.com/uploads/1/3/0/8/130874148/78795894ac8ed6b.pdf
    • http://albionwatertreatment.org/uploads/1/3/0/9/130969885/801279.pdf
    • http://alapilecolombia.com/uploads/1/3/0/6/130639551/sanufof_denozilaj.pdf
    • http://lvlashlady.com/uploads/1/3/0/4/130475966/zidopexobuv.pdf
    • http://lilibugsshop.com/uploads/1/3/0/6/130604947/5041151acbce20c.pdf
    • http://boat-unlimited.com/uploads/1/3/1/4/131453269/pefesupi_fefuwiwomu.pdf
    • http://sparrowtosea.com/uploads/1/3/0/4/130436367/jefusa_nuraravimaxizu.pdf
    • http://kg-re.com/uploads/1/3/1/3/131384333/300e28919277.pdf
    • http://mpregobsession.com/uploads/1/3/0/6/130620835/d4bdd.pdf
    • http://groundedkohtao.com/uploads/1/3/1/1/131163616/vomadisero.pdf
    • http://insyncforlife.com/uploads/1/3/0/7/130739991/3717135.pdf
    • http://strictlyejuices.com/uploads/1/3/0/3/130313086/ridodasuzivuban.pdf
    • http://elitesportsparenting.org/uploads/1/3/0/4/130435658/167155e9cb8.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_off0000660f.bin
cb145a7a8f27ec20a7366db8c0eccf300130ac2d98954f0f013308e9b5e0758f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660F 10324 bytes

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