Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e54b5d2a6dc2be…

MALICIOUS

PDF

50.0 KB Created: 2020-08-07 03:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d071145751ecb5e0043e39c94dfa1a0 SHA-1: 357471265f347c5aa8044bc440fdb83cdf2169b6 SHA-256: 42e54b5d2a6dc2be0703569f3cf670c0aae6a7987a8e5bd584100d39eb99f894
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 text, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=beatles+ukulele+chords+pdf', which is also flagged by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This suggests the document is designed to lure users to malicious infrastructure by masquerading as a benign search result.

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=beatles+ukulele+chords+pdf
    • http://files.kigercreekflyshop.com/uploads/1/3/0/9/130969370/vimepilajobu.pdf
    • http://lepamo.sushilian.com.au/uploads/1/3/1/3/131381428/18ee384f2996f4a.pdf
    • http://files.poddlepublications.com/uploads/1/3/0/8/130813357/7cdc025b6.pdf
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/43833407172.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/momudimokurixakipakumixe.pdf
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/zijafawoga.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/61840601393.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/16729524199.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/takifakit.pdf
    • https://cdn.shopify.com/s/files/1/0432/8741/2900/files/kixuruxuzaxozitop.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/76777376410.pdf
    • https://cdn.shopify.com/s/files/1/0432/9000/1572/files/nufivawaweti.pdf
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/amd_radeon_hd_5450_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15796621189.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_off0000781e.bin
c6f4f855babc9bb6212ce216d11a9aea60fb9d47c46b9360ed9a78c4d915e97b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781E 5084 bytes
font_01_sfnt_off0000897f.bin
0b0345ae387cb56f749abf414c4f724379f3a69acf1dee97f76c08884ba3cf8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x897F 10244 bytes
font_02_sfnt_off0000ac76.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC76 4324 bytes

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