Malicious PDF — malware analysis report

Static analysis result for SHA-256 faab8441dc3740c1…

MALICIOUS

PDF

39.2 KB Created: 2020-03-20 04:47:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2f59b96bf407bc1b89cea0899c6a566c SHA-1: 58c76a7b280c8e034aff78cc0c0ef2c80f93cf30 SHA-256: faab8441dc3740c191148d8f64b3ae340bb6dc2ea7b614560e0038aae07bf224
94 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF document was flagged by an ML classifier as malicious. It contains a large number of external links, many of which point to PDF files hosted on various domains, indicating a potential link farm or redirection scheme. The primary URL identified is http://app-pof.com/uploads/1/3/0/8/130814120/130814120.html#turtle+mountain+tribal+court+belcourt+nd, which likely serves as a lure or initial landing page. No scripts were extracted, but the sheer volume of external links suggests a drive-by download or phishing attempt.

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://app-pof.com/uploads/1/3/0/8/130814120/130814120.html#turtle+mountain+tribal+court+belcourt+nd
    • http://ontarioresume.com/uploads/1/3/0/7/130740224/8264363.pdf
    • http://marshfieldcomputerrepair.com/uploads/1/3/0/5/130545334/9785763.pdf
    • http://precisionsprayparts.org/uploads/1/3/0/4/130477064/7414352.pdf
    • http://hoskinmetrologie.com/uploads/1/3/0/3/130313323/5968975.pdf
    • http://warriorworksllc.com/uploads/1/3/0/4/130435641/benijuginotepa_xufuxuwutadob_ferenisobuvuzig_fogavazuz.pdf
    • http://mueblesyohanna.com/uploads/1/3/0/6/130604968/eec8322635b.pdf
    • http://newageapparel.co/uploads/1/3/0/4/130436163/fukiriperaf_dumevemadove_tovepise_ranujepedubebej.pdf
    • http://lessons4life101.com/uploads/1/3/0/3/130323531/9993144.pdf
    • http://hombresolterobuscodama.com/uploads/1/3/0/2/130287502/b0bfe9c9.pdf
    • http://dropapp.com/uploads/1/3/0/2/130272648/fewomelavukutalid.pdf
    • http://www.fredachaney.com/uploads/1/3/0/6/130605267/monel.pdf
    • http://www.outdooritalia.net/uploads/1/3/0/7/130738719/rubovutikamosar.pdf
    • http://squadronheadquarters.com/uploads/1/3/0/7/130776821/gaximejolerevi.pdf
    • http://pleasantcommunities.com/uploads/1/3/0/5/130590265/2174662.pdf
    • http://aussiehomemade.com/uploads/1/3/0/7/130776035/a84f21d5be6fa.pdf
    • http://pbconsulting.us/uploads/1/3/0/9/130969993/2332406.pdf
    • http://therealmaddilenae.com/uploads/1/3/0/7/130740074/zasorulew.pdf
    • http://www.monsieurcoulibaly.com/uploads/1/3/0/5/130588674/a79a8.pdf
    • http://hippostories.org/uploads/1/3/0/2/130291527/baparidezib-depamis.pdf
    • http://theoaktreepreschool.com/uploads/1/3/0/8/130813032/buluwofotewilejewu.pdf
    • http://webmail.sdc-studio.com/uploads/1/3/0/4/130483320/gavisojoso-fidetifugabi.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_off00006df4.bin
892c296811a462117c44dab3b3710a2078036b7a476b4d6c52d1740fed0b6aa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF4 8588 bytes

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