Malicious PDF — malware analysis report

Static analysis result for SHA-256 f891d832422bcf4d…

MALICIOUS

PDF

43.8 KB Created: 2020-08-25 06:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d4686248b65e0d39b335082fde5b443 SHA-1: c2a24ce2f5f7219bd5d349ba194ea7f74fe47e0d SHA-256: f891d832422bcf4dadc2c7072df01c5f03c0c22e421a1c012354dbba6cc38bbe
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a tactic to manipulate search results or distribute malicious content. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=android+navigation+component+with+bottom+navigation'. The document body itself is heavily obfuscated but contains references to the same URLs.

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=android+navigation+component+with+bottom+navigation
    • http://wifozaxox.straitduckguideservice.com/uploads/1/3/2/7/132712615/6109912.pdf
    • http://pemusu.topcatswing.com/uploads/1/3/0/8/130813054/jorajebureninuraten.pdf
    • http://files.fusiondancefest.com/uploads/1/3/1/3/131379443/xilexuletuxen.pdf
    • http://gomamu.culturalkapital.com/uploads/1/3/2/6/132681192/mobuwumuwisipudelafi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/19415973642.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/a_an_the_zero_article_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0429/6520/5141/files/jokugo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2221/9421/files/51268907220.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/jim_matheson_twitter.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/diablo_2_respec.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3877/files/21538263353.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pazutorigixasozesilax.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/zalesipukafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8537/3333/files/56595131205.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/wolera.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/dunanaxapo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/facebook_open_graph.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6689/files/bebetutatosinerujiw.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_off00006af5.bin
f92537e66af7d8089bd686bf8f96b1bc15b722d88a6f5f3358f338943f3bacf1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF5 5556 bytes
font_01_sfnt_off00007dbf.bin
441fdf77c726013ffb6b8d73252cb6ba8c4bb45bd5a9cbc96b75b1fc3d17c55e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBF 10712 bytes