Malicious PDF — malware analysis report

Static analysis result for SHA-256 59946a06fafb0ecc…

MALICIOUS

PDF

42.5 KB Created: 2020-08-07 03:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3d88a4c849415633c7605d9f1ccc335 SHA-1: 4c7c1c8ad82d7c44209ffbc7f98f38898b4d7c4b SHA-256: 59946a06fafb0ecc464d36349af0b715a4f40f9e39c74fca3d5dc3cffa58eb39
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=blockchain+supply+chain+thesis+pdf'. This link is presented within the document body, disguised as a thesis PDF. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to improve search engine ranking for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=blockchain+supply+chain+thesis+pdf
    • http://files.ashtangaingroningen.com/uploads/1/3/0/7/130740049/tujegopaguriv.pdf
    • http://files.doneyparkhomestead.com/uploads/1/3/1/4/131453713/zasunobowarivo-janoboletub.pdf
    • http://files.windrivercompanyllc.com/uploads/1/3/2/8/132814272/topigalos_vetobutawogul_pejekenad_sebiware.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5479/files/wekoroxibugabajawej.pdf
    • https://cdn.shopify.com/s/files/1/0436/6827/5353/files/nadomasag.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/32531734717.pdf
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/gozazoxumewokamote.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/satefuzejejufum.pdf
    • https://cdn.shopify.com/s/files/1/0440/8606/7352/files/gezel.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/fender_frontman_212r.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/13591378967.pdf
    • https://cdn.shopify.com/s/files/1/0437/0546/7035/files/32546953977.pdf
    • https://cdn.shopify.com/s/files/1/0436/6126/3001/files/vesperia_altered_artes.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_off000066e7.bin
0e4cba6837877f0e3a054e23d7b4a5815013d87e2cb914d2790bcf4230a460b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E7 5364 bytes
font_01_sfnt_off00007935.bin
6bb52651e49f4868dfba1e231246fb861d4cd766199c030af4634175b3c697ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7935 10536 bytes

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