Malicious PDF — malware analysis report

Static analysis result for SHA-256 13ed4963732ed924…

MALICIOUS

PDF

42.4 KB Created: 2020-08-16 19:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eee7a6b61b4c699a64fabea1bf312210 SHA-1: f4fd721f1035ec5879d016a4cd622279e5c0131a SHA-256: 13ed4963732ed92440e3beba505e5467ca831dbb09cbc21ca10efd04021dc813
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 a known malicious redirector at 'https://ttraff.com/pify?keyword=brahmanand+bhajan+pdf', indicating a likely phishing or scam attempt. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify links, reinforcing the 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.com/pify?keyword=brahmanand+bhajan+pdf
    • http://files.talentztickets.com/uploads/1/3/2/6/132681928/xejivid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vawis.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/vesogenotukelaso.pdf
    • https://cdn.shopify.com/s/files/1/0432/0011/8943/files/sexual_and_asexual_reproduction_in_animals.pdf
    • https://cdn.shopify.com/s/files/1/0435/6784/1443/files/download_al_quran_dan_terjemahan_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/71195892565.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/lizavemelowukuges.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/circuite_integrate_analogice.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/merriam_webster_learner_s_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/mimamojisen.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/bsmrstu_circular_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/ma_car_bill_of_sale.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/98277228865.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_off0000692c.bin
0fef959d6844ab0274107bffdcebf8434b0d7aa8085da5a5dbf217c5d3f19643
pdf-font-stream PDF embedded font (sfnt) at offset 0x692C 5336 bytes
font_01_sfnt_off00007b32.bin
56124e5390e6ce38b3c3b632c4b09199183dd62d04ddd529af8460d37dc2b080
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B32 10024 bytes