Malicious PDF — malware analysis report

Static analysis result for SHA-256 254fb63dc73fae21…

MALICIOUS

PDF

37.2 KB Created: 2020-05-15 04:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3030e27d965cfcd5b2be2c3e464f6aa SHA-1: 90af32b9918131ccb3fff93d4a879a73131a8ada SHA-256: 254fb63dc73fae21a039b12082e6349500830ba0765d5857ccdc0ba500ad6e75
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

This PDF document contains a large number of external links, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to 'Aadhar card form pdf free' and numerous URLs, suggesting a lure to phishing or scam content. No scripts were extracted, limiting the analysis of direct payload execution.

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://bsa-sccc-pack301.com/uploads/1/3/1/3/131381706/131381706.html#aadhar+card+form+pdf+free
    • http://southernparkway.com/uploads/1/3/0/4/130436089/dafadomomosodip.pdf
    • http://gsretailgroup.com/uploads/1/3/1/6/131606146/2375312.pdf
    • http://jscords.com/uploads/1/3/0/6/130604056/rowirozewuvovigato.pdf
    • http://cupertinoonlinenews.com/uploads/1/3/0/7/130776434/3408705.pdf
    • http://marshall-hardyandassocs.com/uploads/1/3/0/4/130476525/vomiw_jixebelelonaz_futuru.pdf
    • http://renegademusic.net/uploads/1/3/0/7/130776103/siparoromami.pdf
    • http://burakbostancioglu.com/uploads/1/3/0/2/130289171/695faacc24fae65.pdf
    • http://justrightmechanical.net/uploads/1/3/0/6/130621656/rokewag.pdf
    • http://beatysoberhouse.com/uploads/1/3/1/4/131407021/bamefujuduvarelites.pdf
    • http://tonygwynn5k.org/uploads/1/3/0/5/130551013/posumi_wisujadulidesir_vazedonujagaram_fuluzolosof.pdf
    • http://beautysensai.com/uploads/1/3/0/2/130289218/6177566.pdf
    • http://intertradex.com/uploads/1/3/0/6/130639539/9962516.pdf
    • http://jethelpinghands.org/uploads/1/3/0/7/130775337/tepenozos_mejewekiwija_rilukuwodovo_vudebet.pdf
    • http://bellefashion.net/uploads/1/3/0/5/130588345/xiwasakorogi.pdf
    • http://attunedreach.com/uploads/1/3/0/8/130874544/d0c94dc5.pdf
    • http://troop90scouts.com/uploads/1/3/1/4/131438775/42dbc7430b5b80f.pdf
    • http://cheerloveproject.com/uploads/1/3/0/7/130739937/9786842.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_off00006636.bin
e87cbc1a69ac494db2ca855091410000361b70aed26243fd00a83d84ac742a88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6636 10352 bytes

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