Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6970fb0fc30d88c…

MALICIOUS

PDF

35.6 KB Created: 2020-08-22 19:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04445d3b1b94033ebaf18a2e6421de1d SHA-1: 9bca6dba7d1f568f0069d8fd0c5acfa5ef53e0c0 SHA-256: a6970fb0fc30d88cb2233d1562e93f9e031d83d1bc610c8a6948d0481860a67e
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links, with a primary link identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=streamline+english+destination+pdf', which is flagged as a malicious redirector. The presence of many Shopify links suggests an attempt to leverage legitimate platforms for SEO manipulation and traffic redirection.

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=streamline+english+destination+pdf
    • http://files.lonnybeharmd.com/uploads/1/3/2/3/132302859/dacb25108.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/77121944333.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0414/files/company_introduction_letter_to_client_template.pdf
    • https://cdn.shopify.com/s/files/1/0440/6909/3541/files/formation_covadis_10._1.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/kebumagusej.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/baditiri.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/apocalypse_world_full.pdf
    • https://cdn.shopify.com/s/files/1/0430/7078/3645/files/alabaster_girl_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/59951226545.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/gozibubodiwavawesafika.pdf
    • https://cdn.shopify.com/s/files/1/0428/4681/4374/files/98117889312.pdf
    • https://cdn.shopify.com/s/files/1/0438/6373/6485/files/alimentacion_sana_para_nios.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004115.bin
6383a7d5463f2b3100218c431d22a6acf953d991566bc32ebc46ae682b03371e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4115 5348 bytes
font_01_sfnt_off00005301.bin
88f746a59602a182431af4b921291dbe83df42724f28c00b71948014a67b14ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5301 9612 bytes
font_02_sfnt_off000073b5.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B5 4324 bytes

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