Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3e4f80a3141b6b…

MALICIOUS

PDF

36.8 KB Created: 2020-08-24 01:38:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee79e2eb7550246c65e8adcb5e4de4db SHA-1: 114dd390016df1e2e1d25b47a167d0446072ce40 SHA-256: cc3e4f80a3141b6b0303aec3db6043f3f24e4b658a753bfcbf2b98b3591e6c25
152 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=d%2526+d+5e+actions+cheat+sheet'. The ML classifier also strongly indicated maliciousness. The presence of many external links, including those hosted on Shopify, suggests an attempt to distribute malicious content or redirect users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=d%2526+d+5e+actions+cheat+sheet
    • http://files.rigirozziarts.com/uploads/1/3/1/4/131438718/xikabo.pdf
    • http://files.throughpolareyes.com/uploads/1/3/0/7/130738636/lotasukutaguxi-vekim-xepagusuj-daberu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/tobunut.pdf
    • https://cdn.shopify.com/s/files/1/0438/6832/4005/files/tajorovazan.pdf
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/using_mis_kroenke.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/bosewipuve.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/sierra_reloading_data.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/26801336991.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/68779635820.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/employment_application_form_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/slice_array_javascript.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_off00004307.bin
f0ace50c04c300a3ea440f7240fedb38355c625ba7806325947e09e13a9d6f85
pdf-font-stream PDF embedded font (sfnt) at offset 0x4307 4988 bytes
font_01_sfnt_off0000543a.bin
491d847b6606b2aeef656f0a947dbdea29e01eb243e8a29fdb65c017b6eb5ea4
pdf-font-stream PDF embedded font (sfnt) at offset 0x543A 4156 bytes
font_02_sfnt_off00006268.bin
1c9204581b14096b25da666a619f62081f05ef47dc2d2b227d2ebd46e9176cc3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6268 11320 bytes