Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb7409ef86b9471…

MALICIOUS

PDF

37.1 KB Created: 2020-08-22 08:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c405d2feb364e6bb52ecac531885f0f SHA-1: 3652c0b8937bb6e015230033a6ffe9a76de094e6 SHA-256: 8fb7409ef86b9471367b7f4ae14d273a59dbfc4a7404dc9e82eb8fe35846492f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL, suggesting a lure. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely as part of a phishing or scam campaign.

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.ru/pify?keyword=radiohead+paranoid+android+piano+sheet+music
    • http://pofofejar.lawhornandassociates.com/uploads/1/3/0/8/130813528/lididinomaron-tamemibike.pdf
    • http://papomuti.leedsmiddleschoolband.com/uploads/1/3/1/8/131872096/9995976.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/woworepa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1268/5977/files/37653308105.pdf
    • https://cdn.shopify.com/s/files/1/0460/1482/4607/files/pironozogilidoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/sawoxakezugusunovekisovep.pdf
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/basecamp_logo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/11835511955.pdf
    • https://cdn.shopify.com/s/files/1/0433/7827/8550/files/cause_and_effect_reasoning_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/waretadubonobedikup.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/android_eating_apple_gif.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/geseruvefowuzijumot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045ea.bin
d1e0d02f82066e29d21acc32ec964ceb1b626cbd3bdcc2fc21e244abc005b4a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45EA 5168 bytes
font_01_sfnt_off00005747.bin
0cb1d5f1f5f5d2d487f36a55c6c552b5ef55a028e199846d031528d065d15158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5747 9988 bytes
font_02_sfnt_off00007970.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7970 4324 bytes

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