Malicious PDF — malware analysis report

Static analysis result for SHA-256 a36e487b091bc5cc…

MALICIOUS

PDF

36.4 KB Created: 2020-08-13 07:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dbd98791ca399855b64b6a1e2eca182 SHA-1: c8eb6389ff3bbbfa5169b5c921c888ae24a9e74a SHA-256: a36e487b091bc5ccaf816874b463f53ad26865ab34b4df0f9587ad39f484486e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is the primary indicator of compromise.

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=active+listening+2+cambridge+pdf
    • http://nijad.covenantlutheran.com/uploads/1/3/1/4/131453416/vogaxogibe_satumumajew.pdf
    • http://files.leemlizzyonline.com/uploads/1/3/1/4/131437636/vomuxoxurojasej-xazorufuzaga.pdf
    • http://files.richellewilliams.com/uploads/1/3/1/3/131378899/jidedetenuzenafovos.pdf
    • http://files.playingwithpallets.com/uploads/1/3/1/3/131380596/ea1bab9f3b6a.pdf
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/fivejevavekadi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/dawanobopakis.pdf
    • https://cdn.shopify.com/s/files/1/0433/4731/2789/files/xujedarepumizinesupavo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/78614624459.pdf
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/72439968990.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/kalender_2020_19.pdf
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/54711336840.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7256/files/26665369253.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/limuvanivupovirinof.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4624/files/hot_springs_spa_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/suromete.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/fexemiligasu.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_off00004f1a.bin
cbef407b79ce5cd3eff071a4899ce6bf9fa8a02dc9d3d1bdc01e4309fbc2d043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F1A 5796 bytes
font_01_sfnt_off000062b7.bin
d3e707b56eed89093c6c52049b54e0bc00f671a4c625d9d9e94f0afaf3010159		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 9964 bytes

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