Malicious PDF — malware analysis report

Static analysis result for SHA-256 3200f51eb3ae3ec1…

MALICIOUS

PDF

55.3 KB Created: 2020-08-06 23:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa7215a26c3f8178fd2aa40fe8d31aa4 SHA-1: fb9eb8c7830249de6d8cff79347ddd86b70b0716 SHA-256: 3200f51eb3ae3ec14892f1e68e7a505ebdcd385587df0de1e799363cea55013e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=software+defined+mobile+networks+pdf'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The presence of a large number of external PDF links further supports a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.com/pify?keyword=software+defined+mobile+networks+pdf
    • http://files.trianglemarketplace.org/uploads/1/3/1/3/131378990/fuset_goxekagula_teletiwigo_mavow.pdf
    • http://files.indoorairsolutionsga.com/uploads/1/3/0/7/130739601/bb5fc3.pdf
    • http://files.crystalrogersphd.com/uploads/1/3/0/8/130814596/2392199.pdf
    • https://cdn.shopify.com/s/files/1/0435/2363/7402/files/resident_evil_remake_speedrun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kazapuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/6441/7695/files/calendario_2020_mensual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/98558340394.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/73121007565.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/helvetica_neue_font_import_in_css.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/49385048896.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7710/files/56365490149.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/body_champ_weight_bench_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/74812273614.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_off000094b2.bin
11dfb6a7192fb8f149b56221daac3294617e271433aba3a2592b1783dcfdac30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B2 5584 bytes
font_01_sfnt_off0000a7a9.bin
87a0175997b9557eaaa58b3555eb15ad50e586e109d382c21bd4d9bd066bf617		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A9 12752 bytes

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