Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f038c86f2aa29c0…

MALICIOUS

PDF

40.7 KB Created: 2020-08-19 05:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5d6097d8e3b58a33854498b25f74c58 SHA-1: fdf623359aa5cf7e0d980fefabdc4df57e376e32 SHA-256: 4f038c86f2aa29c07b95214eecace9106850ef88bc30a896f374c606c64a3a82
140 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or malware distribution attempt. The document body also contains text suggesting a callback lure, consistent with a tech-support scam or similar pretext. No scripts were extracted, but the embedded URLs and link farm heuristics strongly suggest a malicious intent to redirect the user to external content.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=outlook+address+book+to+iphone
    • http://juvovibu.bigpineschools.org/uploads/1/3/1/1/131164250/lovaxorowijikafup.pdf
    • http://files.womensoutdoorweekends.co.uk/uploads/1/3/1/4/131438891/6279321.pdf
    • https://cdn.shopify.com/s/files/1/0437/5530/7159/files/40835326243.pdf
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/dimun.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/ralajezikoni.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/vatoni.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/sixth_sense_technology_abstract.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4885/files/83277803637.pdf
    • https://cdn.shopify.com/s/files/1/0433/9456/4250/files/alice_in_chains_don_t_follow_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0455/6849/1685/files/toniruduwimasopage.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3655/files/ludezositom.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/temekasivariwok.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/monte_carlo_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/8410/2297/files/scrabble_game_download.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_off00006212.bin
69e2480e8cb489722c124b8363fbde39817228b7c305e78d99143440d73d561b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6212 5276 bytes
font_01_sfnt_off000073ed.bin
a323cd27c99decae13ae9cdbdbd8105a9420fb91adaf556a6a48656b1657e822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73ED 9952 bytes

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