Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6f1298060299a2…

MALICIOUS

PDF

52.2 KB Created: 2020-08-20 05:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f296edbf6c3a01530d28427e7a123023 SHA-1: 3cdf5b7b81677ad747414c3ab4a28c560e0d522e SHA-256: db6f1298060299a2452640482b429aa0b8573c06b8db56d7064b84ca63d7fd1b
152 Risk Score

Malware Insights

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

This PDF document contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though partially corrupted, contains text related to 'additional insured forms comparison' and the malicious URL, suggesting a phishing or scam lure. No scripts were extracted from this sample.

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.cc/pify?keyword=additional+insured+forms+comparison
    • http://wobemi.alexandriatalley.com/uploads/1/3/1/6/131606122/gopax_panisaxaze_nofavarewunuwe_vukinusev.pdf
    • http://files.aaresi.com/uploads/1/3/0/8/130874101/lokemeki-wevipu-lagumu.pdf
    • http://files.turningcomic.com/uploads/1/3/0/8/130814337/kagudok.pdf
    • http://files.gabrielledeveaux.com/uploads/1/3/2/7/132740399/dasegewerugebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/lojenafosebujejib.pdf
    • https://cdn.shopify.com/s/files/1/0433/8145/7061/files/lagu_betrand_peto_sahabat_kecil_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0226/files/47555496432.pdf
    • https://cdn.shopify.com/s/files/1/0437/9197/4557/files/62337252784.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/38335398406.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/tikaxatikatepiropo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/zutukazojexoxegivaxuweda.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/vapiwobedirufuwevuduli.pdf
    • https://cdn.shopify.com/s/files/1/0439/2960/0155/files/after_effects_shortcuts.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/boruxunijutaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/11223049998.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_off00008e1e.bin
5f9580b275fa02199f84388ba20aadba4799ab9b0f4b173154bbc0f15fd38bdf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1E 5288 bytes
font_01_sfnt_off0000a001.bin
1c8435c19208c77e469e7293e31dbfddc2d648ce147b909c696299efddd8791c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA001 10548 bytes