Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e27ddcac462507…

MALICIOUS

PDF

44.7 KB Created: 2020-08-12 00:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f297ad49d1278900d824e6eb08cfedcf SHA-1: 64f46332c6a659a18c2b7b0cd2739ab25ef1af45 SHA-256: b2e27ddcac46250703600c59ee36c88984d6aeacbce301d1919914be6c128cc0
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded links that are part of a link farm, with one specific link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'gastric sleeve pre op diet pdf' and the malicious URL. This suggests a phishing or scam attempt to lure users to malicious infrastructure.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://ttraff.ru/pify?keyword=gastric+sleeve+pre+op+diet+pdf
    • http://files.aladenet.org/uploads/1/3/1/4/131453177/zigozinupititado.pdf
    • http://files.antioch-vb.com/uploads/1/3/1/3/131384121/binara.pdf
    • http://files.westimartin.com/uploads/1/3/1/8/131856435/59c2e9fa62d3.pdf
    • https://cdn.shopify.com/s/files/1/0438/9103/2216/files/79727645398.pdf
    • https://cdn.shopify.com/s/files/1/0434/2484/1890/files/nodelozaso.pdf
    • https://cdn.shopify.com/s/files/1/0435/0879/3510/files/disujis.pdf
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/vefowifaxone.pdf
    • https://cdn.shopify.com/s/files/1/0432/1961/5901/files/gta_5_apk.pdf
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/xegitovikop.pdf
    • https://cdn.shopify.com/s/files/1/0436/9301/5195/files/zidomewipitogikixepivijab.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/moziwobomavokufabejelurit.pdf
    • https://cdn.shopify.com/s/files/1/0446/9984/4762/files/august_calendar_printable.pdf
    • https://cdn.shopify.com/s/files/1/0449/4213/1355/files/10_class_math_solution_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/electronic_library_project.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007084.bin
de69314d009e5c469203efd5c15887298a8a52168935eee8bb0ba32af509ed9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7084 5240 bytes
font_01_sfnt_off0000826f.bin
dc15cd473803ed33c7e8930b3e5aaf00bd1dddc4b19e45116dbd26a2e4346207		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826F 10468 bytes

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