Malicious PDF — malware analysis report

Static analysis result for SHA-256 148d08e4ea028190…

MALICIOUS

PDF

31.6 KB Created: 2020-03-11 06:14:28 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8530f27d1ab1a221c4435e17a6a607b5 SHA-1: e0db9ca26c259928d1dfc602dbae6d2465891a8e SHA-256: 148d08e4ea028190bd9febce28f2ff79916f901536f21ebba253906a5097063c
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for online shoe purchases. The presence of numerous external links and the deceptive content indicate an attempt to direct users to potentially malicious or spam-related websites, likely as part of a phishing or scam campaign.

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://woodlandstuition.com/uploads/1/3/0/7/130738846/130738846.html#red+wing+safety+shoes+online+india
    • http://1lifeworthliving.com/uploads/1/3/0/6/130603855/9ddd398d3a5d483.pdf
    • http://tickridgecbc.com/uploads/1/3/0/2/130288592/e6dd927e5c.pdf
    • http://enhancedvisionwindowguttercleaning.com/uploads/1/3/0/6/130605476/89451.pdf
    • http://hammtowel.com/uploads/1/3/0/3/130324386/tojigasunura_zikajazukid.pdf
    • http://momentsinhavana.com/uploads/1/3/0/3/130323268/658e95df530d.pdf
    • http://africacollegeofbishop.org/uploads/1/3/0/6/130603975/7085fd61.pdf
    • http://yestoyouthgala.org/uploads/1/3/0/7/130775603/e95bbc9724b9e.pdf
    • http://chhsports.com/uploads/1/3/0/7/130739117/suwem.pdf
    • http://jij.net/uploads/1/3/0/6/130640052/0ad9aca62a.pdf
    • http://udo-lindenberg-handsigniert.org/uploads/1/3/0/6/130620366/0128e.pdf
    • http://yourbusinesstracker.com/uploads/1/3/0/5/130589251/rogeripus.pdf
    • http://dmdhomes.net/uploads/1/3/0/7/130776043/59025b964a0c90.pdf
    • http://msmoorewileysliteraturecorner.com/uploads/1/3/0/6/130604046/3543081.pdf
    • http://splashingbonaire.com/uploads/1/3/0/8/130874066/9303788.pdf
    • http://makergal.com/uploads/1/3/0/2/130272403/wijununedatifiw.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_off00005560.bin
269491d162606b16f18ca6d1eec7c963d37f8f4de50fe39e4a67bddeeec4201d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5560 6944 bytes

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