Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5043497dda644d…

MALICIOUS

PDF

35.1 KB Created: 2020-08-08 14:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9aae9fe57cb8f16c637693f891b505e0 SHA-1: 2fd5f70daf572dfdb62d080e970d1a2c916bd416 SHA-256: ae5043497dda644db4dea04782b90323ccfa31d481ebb32dabf44513611d6b0a
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 pointing to 'ttraff.com'. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the lure to download a PDF. The primary intent appears to be redirecting users to malicious infrastructure.

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=attacking+network+protocols+pdf+download
    • http://files.otrphoto.com/uploads/1/3/0/8/130814805/a8b1c2c4e16e7e.pdf
    • http://butirite.shopgoldgray.com/uploads/1/3/1/6/131606289/govitoli.pdf
    • http://files.mpowersolutions.org/uploads/1/3/1/6/131606674/rapinuzoguxezixo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/vewaguliderekisabaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3315/7014/files/icarus_and_daedalus_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/best_empire_total_war_mods.pdf
    • https://cdn.shopify.com/s/files/1/0434/2752/8871/files/human_physiology_a_k_jain.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/oxford_university_press.pdf
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/412396812.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/bujopukopemegozoduwive.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/45918716123.pdf
    • https://cdn.shopify.com/s/files/1/0432/3255/9267/files/kajibepenese.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/xevagexawuliji.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1329/files/rectangular_to_polar_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0433/3010/9593/files/boy_scout_merit_badge_pamphlets.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_off000049b1.bin
44c259e3c55b9d062e5e1aafcb391057f4540e03fbc0e085e46186b9363398e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49B1 5468 bytes
font_01_sfnt_off00005c73.bin
ce5c50a73092577ed17de380b4fc29a529199b450a429d9504979ef5fd4ee88a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C73 10328 bytes

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