Malicious PDF — malware analysis report

Static analysis result for SHA-256 33453e7a560737b3…

MALICIOUS

PDF

48.7 KB Created: 2020-03-07 18:32:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 81537f7903ca8aa4875a4772c765839d SHA-1: 53c2ce6a0ba6bfc061e928ff82f8223cb87d0485 SHA-256: 33453e7a560737b38b0c26d0e48cf1eaaa7a8db5b392413ffc10bace6be39ab2
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded external links, a technique often used for SEO spam or to direct users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential attempt to manipulate search engine results or distribute malware. The document body itself contains garbled text and URLs, further supporting the malicious intent of directing users to external, potentially compromised, sites.

Heuristics 3

  • 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
  • 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://sbobet.lucky1st.com/uploads/1/3/1/0/131070237/131070237.html#acr+bi-rads+category+3+probably+benign
    • http://researchtomorrow.net/uploads/1/3/0/3/130323888/zipefezuvawitopise.pdf
    • http://lurious.com/uploads/1/3/0/4/130476065/wunamazufuxebene.pdf
    • http://mytmtraining.site/uploads/1/3/0/7/130740338/zuxijajonadese.pdf
    • http://micasitarentals.com/uploads/1/3/0/2/130273766/296d5.pdf
    • http://getknown.in/uploads/1/3/0/2/130289521/bivebotajinusediv.pdf
    • http://www.graniteconsultingscam.com/uploads/1/3/0/3/130313274/a037349b3761b7.pdf
    • http://people4politics.com/uploads/1/3/0/8/130813783/59ac14ff.pdf
    • http://cobourgfarmersmarket.com/uploads/1/3/0/6/130621456/welifotabeva_velozekulap.pdf
    • http://paleolifeblog.com/uploads/1/3/0/2/130272932/9032768.pdf
    • http://minneapolisbailbond.com/uploads/1/3/0/6/130639693/a702c5ae7ab09.pdf
    • http://root.lifeoil.ba/uploads/1/3/0/4/130435956/xugorokesete-farawixuni-tifiga.pdf
    • http://budgetbarbi.com/uploads/1/3/0/5/130540937/35ad5e556f47d1f.pdf
    • http://simpledelisheats.com/uploads/1/3/0/5/130540746/404805.pdf
    • http://xcalligraff.com/uploads/1/3/0/7/130776509/xidunutijuvikuzu.pdf
    • http://www.swhalenart.com/uploads/1/3/0/8/130813897/dofubuzujes.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_off00009488.bin
91ef47dd9dc248460b1f2e0ea6febd059508c497c9caa87e6868c53486a96567		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9488 8764 bytes

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