Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a686a34c8817e16…

MALICIOUS

PDF

42.1 KB Created: 2020-08-13 13:10:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 691ca0b6fa7812d27d9a15f55cb9b990 SHA-1: 0e0ab63868f8a90480073cfac68a4a0a96bd1bf0 SHA-256: 3a686a34c8817e167b4a0daa3ae336f89ec493756d3b198accfdbf0bf5d3810b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Tef Canada Maroc PDF'. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. The primary malicious IOC is the redirector URL.

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.cc/wb?keyword=tef%20canada%20maroc%20pdf
    • http://files.trippershollow.org/uploads/1/3/0/7/130740464/7889371.pdf
    • http://files.voyagerinconnue.com/uploads/1/3/1/4/131483307/556140.pdf
    • http://milarebik.cpcoastal.com/uploads/1/3/0/7/130775982/wipigoxejexoga.pdf
    • https://cdn.shopify.com/s/files/1/0434/1835/3821/files/macroeconomics_jones_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2943/files/67774452857.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/75533633828.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/surixogugabibigozirifom.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/python_kill_process.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/jamidefanofuzipakeni.pdf
    • https://cdn.shopify.com/s/files/1/0433/5383/3637/files/metabolic_bone_disease_radiology.pdf
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/58093324220.pdf
    • https://cdn.shopify.com/s/files/1/0439/4021/6987/files/meditations_marcus_aurelius.pdf
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/6494906246.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/shahrzad_2_part_15_full.pdf
    • https://cdn.shopify.com/s/files/1/0433/2532/5467/files/banwell_mccash_spectroscopy.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_off000064a2.bin
9b120cf55a7baf6a7d78cc317d092e05d6a2e5d7041398ac797564c1097e38db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A2 5040 bytes
font_01_sfnt_off000075ae.bin
b9d22b0ba190db5b37058f5f85a8ed76d71815e32e774cd4be7be78d67dd929c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AE 11672 bytes

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