Malicious PDF — malware analysis report

Static analysis result for SHA-256 31c8eb90ef4be654…

MALICIOUS

PDF

44.7 KB Created: 2020-08-01 02:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9189a251579269e7eec2d073bc4546d SHA-1: a19171adbdfd115e13c63a682f6c7d517bd72e03 SHA-256: 31c8eb90ef4be654294d0b003593338704dd0335de8e95b803c12ab5f2a03dca
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another critical heuristic identified a large external PDF link farm, with many links hosted on 'cdn.shopify.com'. The ML classifier also strongly indicated maliciousness. The presence of these numerous links suggests a phishing or social engineering attack designed to redirect users to potentially harmful content.

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=roll20+curse+of+strahd
    • http://files.queenskitchencatering.com/uploads/1/3/1/6/131606059/nazerarefofoja.pdf
    • http://files.martabrysha.com/uploads/1/3/0/8/130813769/pivoxifuvefarup_sovutelipunul_poweginevitiv_kuwite.pdf
    • http://files.bsutransit.com/uploads/1/3/1/3/131381804/0ea26.pdf
    • http://files.queenofthewaves.net/uploads/1/3/1/4/131437139/baselomixojapefuwumu.pdf
    • http://files.britthipple.com/uploads/1/3/1/4/131453193/pemerenuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/66276009487.pdf
    • https://cdn.shopify.com/s/files/1/0433/7260/9686/files/51345131473.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/27036903254.pdf
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/gufeba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48675385277.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/92930880512.pdf
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/ruwomipusefu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/60568498280.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/taxegopetax.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_off00006fa8.bin
0a6b55cd84bd18a4cdf6452cafeaf28d9d52404c062c5a5771225bf431d8c316		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA8 5392 bytes
font_01_sfnt_off000081f7.bin
9dfc563c46e05af71e22ba4646835ec4872803a5342ee3768caa9d7b55b80e4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81F7 10648 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.