Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea1dcdd36f05773…

MALICIOUS

PDF

50.2 KB Created: 2020-08-13 23:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 744f1b55981388fc3d4753c016735fca SHA-1: 94ba14e5085409f0490858789e0d442612f7a654 SHA-256: 4ea1dcdd36f05773f5ebe3552e9555fb43675ccf4767443cceecb7d870f78711
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that one of the links directs to 'https://ttraff.com/pify?keyword=anybody+can+dance+song+video', which is associated with malicious redirector infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests that the document is designed to host numerous external links, likely as a method to distribute malicious content or facilitate phishing attacks. The document body contains garbled text but includes the malicious URL and several other PDF links.

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=anybody+can+dance+song+video
    • http://files.amesucc.org/uploads/1/3/1/6/131637384/976d898.pdf
    • http://fekinulol.hylandceilings.com/uploads/1/3/0/7/130738524/30c8d6.pdf
    • http://files.ryanlaneleather.com/uploads/1/3/0/7/130775242/3796116.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/pipexazejavutepezanebuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9773/5843/files/77572667473.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/bubujikav.pdf
    • https://cdn.shopify.com/s/files/1/0431/3484/5079/files/10059264240.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/vazovezajujulimevi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/debate_topics_for_elementary_students.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5829/files/edit_adobe_acrobat_x_pro.pdf
    • https://cdn.shopify.com/s/files/1/0431/1118/6585/files/investment_banks_in_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/buried_child_act_3.pdf
    • https://cdn.shopify.com/s/files/1/0435/9651/3448/files/components_of_aural_rehabilitation.pdf
    • https://cdn.shopify.com/s/files/1/0439/0970/9976/files/97129053174.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_off0000710b.bin
d04fc956c0121c24dc83c0169b9474d7c616eed56e6160cbbd1dd9aab326cf75
pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 5272 bytes
font_01_sfnt_off00008311.bin
9c36a3cecff8723b893b748b5014e021f67d36c7fcfae7bce90a81c9e973ee1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8311 10260 bytes
font_02_sfnt_off0000a67d.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA67D 16164 bytes