Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e76a2bf343c0601…

MALICIOUS

PDF

39.9 KB Created: 2020-08-11 23:31:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a46967507859e83acb3e5fbc502aa98 SHA-1: 79fc78d0916de6c46b770fd7fe2408631b0752c2 SHA-256: 4e76a2bf343c0601b19c7135b467ee5a191ff062480e5bb1b9714ade7df4b7f1
150 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 of which point to benign content on Shopify. However, one critical link directs to a known malicious redirector, ttraff.cc. This redirector is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URLs, suggesting a deliberate attempt to drive traffic to these links. The presence of a malicious redirector and a link farm indicates a phishing or scam attempt.

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.cc/pify?keyword=basic+electronic+devices+and+circuits+mahesh+patil+pdf
    • http://zujula.vcssc.ca/uploads/1/3/1/3/131381204/zugusowadawewe-rifiwiforokoga.pdf
    • http://files.daisiesandchalk.com/uploads/1/3/2/6/132682685/zatuzefavarogun.pdf
    • http://files.neeleyrealestate.com/uploads/1/3/1/4/131406291/nijofotejo.pdf
    • http://kemopozif.djbendigo.com/uploads/1/3/1/0/131069934/bujujuwo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7731/1391/files/raramuzinixodesu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6951/2607/files/35434604635.pdf
    • https://cdn.shopify.com/s/files/1/0448/6791/1842/files/local_anaesthesia_in_dentistry_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/56147840537.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/70882847415.pdf
    • https://cdn.shopify.com/s/files/1/0431/6413/9669/files/detective_byomkesh_bakshi_story.pdf
    • https://cdn.shopify.com/s/files/1/0438/4283/0496/files/kubodorusesi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2854/4668/files/second_law_of_thermodynamics_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8299/files/zadutopak.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_off00005d0b.bin
e0544ab700922fa1ade2def6e35f0907815cc494df50bf19bed8a65e99e20e51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0B 5504 bytes
font_01_sfnt_off00006f90.bin
e8dd66c75286b737ae06635f42b52d65dd18b399bdb7f5c658f9857f1c02f4eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F90 10328 bytes

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