Malicious PDF — malware analysis report

Static analysis result for SHA-256 3049681c4b893db3…

MALICIOUS

PDF

52.3 KB Created: 2020-08-06 17:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68d76dd27bc7167a1415f61018944840 SHA-1: ff84729e8fd5af3ad1db7276631305a6a02754be SHA-256: 3049681c4b893db3c911bbaa6357a3b6ae2ad3eb9c54bb9656c79603bb692fd7
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=aime+cesaire+poems+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file's purpose appears to be redirecting users to malicious infrastructure.

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.cc/pify?keyword=aime+cesaire+poems+pdf
    • http://files.drhalden.com/uploads/1/3/1/3/131379639/b7406e7a3.pdf
    • http://files.maxblackphotos.com/uploads/1/3/2/7/132740598/c055f8931.pdf
    • http://pixalizel.kateleibrand.com/uploads/1/3/0/7/130775169/didezuxureralewa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/minuwuzelit.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/30178283083.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/person_centered_theory_in_counseling.pdf
    • https://cdn.shopify.com/s/files/1/0429/6622/0956/files/volidojeba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53446206952.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/67920031984.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/betelamazemofuwaxelewa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/49396897284.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/18611501383.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xarapidarobumebavo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4254/4533/files/biblia_reina_valera_espaol.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_off00008e5b.bin
6657958b7fbbe695a09c9c9c87a117b21ac8235e63c28b6f7c28957a1ba02256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5B 5260 bytes
font_01_sfnt_off0000a027.bin
7fa0fd81f17d91fd7387049b184a8b9551ef6502c167a7e7b9fbdc38bd355420		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA027 10712 bytes

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