Malicious PDF — malware analysis report

Static analysis result for SHA-256 45e0b45afbb1def7…

MALICIOUS

PDF

43.0 KB Created: 2020-08-19 03:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 114aa72934d7be3dcae8fa86fa878fc9 SHA-1: 6dcb83c23d781c96abd3f8ca5a426c59a6f46600 SHA-256: 45e0b45afbb1def7fa34b365a5943a782dc15af7179fb3e687efd67545aa4071
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=animal+crossing+new+leaf+3ds+fish+guide'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external content. The presence of a PDF link farm heuristic further indicates an attempt to distribute malicious links. No scripts were extracted, but the overall structure and link analysis strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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 https://ttraff.ru/pify?keyword=animal+crossing+new+leaf+3ds+fish+guide
    • http://pigekejo.csdaa.org/uploads/1/3/2/6/132681611/lapes_metel_wozez_kabatat.pdf
    • http://bapix.lucaselliottart.com/uploads/1/3/0/8/130813547/wuzuguxeju_pabifimiler_vaxunifiloguvaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/16876439474.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/camera_scanner_to_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/2778/3080/files/80812350471.pdf
    • https://cdn.shopify.com/s/files/1/0445/3846/2372/files/volvo_s80_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/0926/0190/files/ias_baba_upsc_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0435/8556/8923/files/dujugetunigufusanu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/ubuntu_wi_fi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/68512348570.pdf
    • https://cdn.shopify.com/s/files/1/0440/4094/5829/files/labopanovesowun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65022979336.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/46891623657.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/arrancame_la_vida_libro_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9304/8992/files/likajanirubunug.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/carrier_weathermaker_9200.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_off000061be.bin
935bec33e4a83311361b40d81c7bfea6465ba5ba4b4f14687c2fa83b6bad62be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BE 5680 bytes
font_01_sfnt_off000074e2.bin
fce48b9ad01d8feb36a823ad5fdadb250af3a1aa91fb7016bda8240edf8749c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E2 13500 bytes

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