Malicious PDF — malware analysis report

Static analysis result for SHA-256 14bd1c3e2e5126e7…

MALICIOUS

PDF

41.5 KB Created: 2020-07-30 18:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 900839289e0754144e293dab9dede6b2 SHA-1: affbeb28adfe5e275215bede444a19891f5cc4bd SHA-256: 14bd1c3e2e5126e7c83673677acf5fdf2e75d4bbbf8298ffe77209d8c0b1f4c6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.com), indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to a song title, likely used as a lure.

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.com/pify?keyword=alfonsina+y+el+mar+guitar+solo+pdf
    • http://files.solretapsychicreadings.com/uploads/1/3/0/9/130969077/fevoben_neloje_sovawasuwera.pdf
    • http://files.frostwoodinteractive.com/uploads/1/3/1/3/131383743/9acde06ab.pdf
    • http://files.artbeatarttherapystudio.com/uploads/1/3/1/3/131398095/95d90.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/0921/0528/files/pijoguvu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/1750919746.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/72532065028.pdf
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/jumogajanurodesuporaxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/7726/1729/files/vilefoperujapabil.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/99097078910.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/56365147048.pdf
    • https://cdn.shopify.com/s/files/1/0428/9524/5475/files/jufogebinukederedelime.pdf
    • https://cdn.shopify.com/s/files/1/0440/5044/8549/files/72285483449.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64255738852.pdf
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/72309649996.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/44424532842.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063be.bin
00fc48278f3683e10f41be01fb2557d93f30d63c5fbf0164304312a3e97fc41d
pdf-font-stream PDF embedded font (sfnt) at offset 0x63BE 5332 bytes
font_01_sfnt_off000075d5.bin
8881b475fbc54c84b47f13c00cac1dae0d2c49de83c60b3c084c6fa71e141967
pdf-font-stream PDF embedded font (sfnt) at offset 0x75D5 10744 bytes