Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c84f55023b9b2f4…

MALICIOUS

PDF

52.6 KB Created: 2020-08-03 19:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 412adc3913dab215ebe6a7634b1f77b7 SHA-1: 835f2c30d5387a884e1f42c1df5b73a171370c60 SHA-256: 6c84f55023b9b2f492d1afa02a8055ab3d3eea2358d1f14eb78eb444b57d447b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=2020+jeep+wrangler+owners+manual+pdf'. The document body also contains this URL and other links to external PDFs, suggesting a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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.com/pify?keyword=2020+jeep+wrangler+owners+manual+pdf
    • http://files.hpcstepupprogram.com/uploads/1/3/1/3/131378899/sonefusogexejew-fikaneviv-gozawivojal.pdf
    • http://files.kansascrappieclub.com/uploads/1/3/0/7/130775865/vogef.pdf
    • http://files.pd-parenting.com/uploads/1/3/2/3/132302993/semuvulakeb-loram-xilewasa.pdf
    • http://files.texasponds.com/uploads/1/3/1/4/131408415/047e0db.pdf
    • http://files.littledarlingscookieco.com/uploads/1/3/1/8/131871730/jiwiwud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3390/9665/files/wijukagu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/xawomosijavafelituzopu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/64075132512.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/33929226003.pdf
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/numbers_1_to_10000.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/rojusep.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/vowinu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/vewire.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/chevy_truck_steering_column_parts_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0433/3653/2136/files/27395485963.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevimofurerofujasopam.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/mamoguvabova.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008dca.bin
b70332f42237531b96aee15c885626ca32bc507679305f3c20323f23da9d287a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCA 5708 bytes
font_01_sfnt_off0000a134.bin
4593ccb7d91b94536f274e3f7bfa8a0cc9c5f123d05299228657de80b457e8af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA134 10604 bytes

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