Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ecd7fe96e7ae6b2…

MALICIOUS

PDF

43.2 KB Created: 2020-08-20 19:28:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd05a4e39dbdb2000ea65f8b153f1531 SHA-1: 34a295333a492b7d237cbf39e2b02ece4c982c40 SHA-256: 0ecd7fe96e7ae6b203321b4cdcbc7698a79678561b52baab034661785287f8ed
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=flood+evacuation+plan+template+nsw', suggesting a lure to a phishing or malware distribution site. The presence of many external PDF links, some pointing to benign Shopify URLs and others to unknown domains, indicates a link farm strategy to potentially obscure the malicious intent or distribute payloads.

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=flood+evacuation+plan+template+nsw
    • http://xofeleviv.thewatertank.co.uk/uploads/1/3/2/8/132814930/novuwununi-miwibilun-tewozilijozop.pdf
    • http://files.centergroundcoffeeshop.com/uploads/1/3/0/7/130776864/rotatapawimuk.pdf
    • http://nedux.martinstrieborny.com/uploads/1/3/1/1/131164250/9405956.pdf
    • http://files.holdingspacedoula.com/uploads/1/3/0/8/130813787/b8403b6462b852.pdf
    • http://files.spirituallyawareparenting.com/uploads/1/3/1/4/131409677/1114811.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/3098/5376/files/gulevekosebopuxujutigaje.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/14054522827.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/79498631835.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/45591698156.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0429/files/99011809203.pdf
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/bibiliya_yera_kirundi_1967.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/71716973283.pdf
    • https://cdn.shopify.com/s/files/1/0440/5864/0549/files/adobe_reader_for_windows_7_ultimate_32_bit.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2679/files/bejeweled_3_free_online_no_s.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_off00006c56.bin
d406f6372879d0ccfef19d0266c70287c3af9a0ea27087e00567c5973b2f93b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C56 5228 bytes
font_01_sfnt_off00007e27.bin
369da5a1c3315848887217706766ea201cb0adee790da1ee144f6fdb370c81f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E27 9936 bytes

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