Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd295badc537681…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 04:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77f29dd3a611b43fa74cd08290448029 SHA-1: 4a4e6429e3e6753cff025bbd5f549b9157dfcaf4 SHA-256: 5fd295badc53768107c4e9fafe9ac7f9d997408bb233a20beb14d567a923a45a
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=hazard+identification+tool+template', is flagged as a malicious redirector. The document body, though partially corrupted, also contains this URL, suggesting a lure to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or distribution mechanism for further malicious content.

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=hazard+identification+tool+template
    • http://vuwokori.holapetinn.com/uploads/1/3/0/7/130776406/xedaxemisi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0447/7786/5367/files/icecream_convertor.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/78995059054.pdf
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/jurnal_kebutuhan_dasar_manusia.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/les_coliformes_totaux_et_fcaux.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/rogasakorudagaretisatunod.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/27564378167.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3478/files/angry_birds_game_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0452/8999/6450/files/92635887801.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/29421486259.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_off000071af.bin
25ae2821553bbef28107925ed032e7db40d0d72fccaddc3451200f59f8da8199
pdf-font-stream PDF embedded font (sfnt) at offset 0x71AF 5132 bytes
font_01_sfnt_off00008312.bin
c16525a57f368d4b9263372c0d9bc71f6585ad5ef33eb780fb0b63c8a877027e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8312 10548 bytes