Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6d34b21b71fd48…

MALICIOUS

PDF

63.3 KB Created: 2020-08-26 17:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 028fcec058c753774b3bbdc84fd80add SHA-1: 728d42c95b3a70b713abcb768d40954b5066a509 SHA-256: ec6d34b21b71fd484cc323373300350e74db0d6498956e73b491333d6c59a9cb
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Richard cheese torrent' and a URL that aligns with the malicious redirector heuristic. This suggests the document is designed to trick users into clicking malicious links, likely for phishing or malware delivery.

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=richard+cheese+torrent
    • http://files.nlrcounseling.com/uploads/1/3/2/6/132695351/finojoladi-tilaxozezura-pewax-palakosolu.pdf
    • http://gogil.inmotiongrafx.com/uploads/1/3/1/0/131069934/nizate.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/zigepowefeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5922/files/mtn_mobile_money.pdf
    • https://cdn.shopify.com/s/files/1/0429/7703/4399/files/vexesemebodo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1409/files/11266498127.pdf
    • https://cdn.shopify.com/s/files/1/0432/9304/8992/files/likajanirubunug.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/star_wars_the_force_unleashed_psp.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/47950516538.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xasaxikopakepiditewevumub.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/call_upon_the_lord_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0436/0758/9027/files/balance_sheet_in_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2426/files/nenulikofomatu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5653/files/wutuwimesisotogibawaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/1094/9273/files/the_accidental_prime_minister_book_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0436/2108/9444/files/kalokave.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/6657793638.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_off0000abf1.bin
0976b45192619915e3a4beea158aefbb2caad1decf29926c5a87ee0f4e2faf2d
pdf-font-stream PDF embedded font (sfnt) at offset 0xABF1 5004 bytes
font_01_sfnt_off0000bce3.bin
4c64d1edcc214bd320e0df5e4982769d6423c0a57a4520879bbd5202178f62d8
pdf-font-stream PDF embedded font (sfnt) at offset 0xBCE3 16768 bytes