Malicious PDF — malware analysis report

Static analysis result for SHA-256 36816000a0496b22…

MALICIOUS

PDF

33.9 KB Created: 2020-08-28 14:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec936e7e57c219087fd0fd4f811cc520 SHA-1: 7b6e84c0f7ea21ff0b8f8e92d5708c9cffe7aa92 SHA-256: 36816000a0496b224e7e3b77fb3152c5840da9fd263d1dc3e9a0acafe6f43548
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=transformers+4+full+movie+putlocker'. This indicates the document's primary purpose is to redirect users to potentially harmful content, likely for phishing or malware delivery. The presence of a large number of external links, many hosted on Shopify, further supports the 'link farm' heuristic, suggesting an attempt to game search engines or distribute malicious payloads through seemingly benign hosting. No scripts were extracted from this sample.

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.cc/pify?keyword=transformers+4+full+movie+putlocker
    • http://janomas.totheninesevents.com/uploads/1/3/1/6/131636725/mikuketodoxi-xegujeme.pdf
    • http://files.sweettoothfudge.com/uploads/1/3/1/4/131407029/kaxodovukoti_fadotam_rapumafem.pdf
    • http://files.wyomingsaddlecompany.net/uploads/1/3/1/8/131856331/zakakowoluwegobines.pdf
    • http://files.guadalupeestimatingandconsulting.com/uploads/1/3/0/8/130814769/pulalikagejidurava.pdf
    • http://nexibu.theporterauthority.com/uploads/1/3/1/6/131637814/kidofuvis.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/97058877311.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/6888959477.pdf
    • https://cdn.shopify.com/s/files/1/0428/4828/8934/files/tobaworagagozuvovewem.pdf
    • https://cdn.shopify.com/s/files/1/0435/6413/8651/files/arminianismo_em.pdf
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/topijatufidewodalagexajab.pdf
    • https://cdn.shopify.com/s/files/1/0459/1216/2453/files/kapipezojabesi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/gijorupilifibulenole.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/pasugibonunukiva.pdf
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/manual_de_administrao_hospitalar.pdf
    • https://cdn.shopify.com/s/files/1/0432/0002/0635/files/wiwewu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/9177016087.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/datofugilasififuko.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_off0000467b.bin
e303a68aff4509c491a40f7b270ebde01c414d1ef80e98f378bb5eb03a06b212		 pdf-font-stream PDF embedded font (sfnt) at offset 0x467B 5320 bytes
font_01_sfnt_off0000588a.bin
79993fd19a3c81e49bba5aa0124f9a7dbeab05d7f156cee8984730a87b4a6a5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588A 10020 bytes

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