Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50c315acdeab559…

MALICIOUS

PDF

40.9 KB Created: 2020-08-11 20:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9baca4ddeade19d9bc1d6daf93de48cd SHA-1: f2f9e6836d9d2ed97580f02962c16be71d15cb34 SHA-256: d50c315acdeab55957a877640bbf5ac2775bde1e39aac3a011ad4197efe06856
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search engine optimized content, with the primary malicious link redirecting to 'https://ttraff.com/pify?keyword=alesis+dm6+user+manual+pdf'. This suggests a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

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=alesis+dm6+user+manual+pdf
    • http://files.embracethebeauty.net/uploads/1/3/0/7/130775583/fimudile.pdf
    • http://files.gullcottagecrafts.net/uploads/1/3/2/6/132682235/f44b85e64550.pdf
    • http://sunizibi.thegingerbreadcity.com/uploads/1/3/1/4/131406258/sabipaginisukawimi.pdf
    • http://files.thevillage.space/uploads/1/3/0/8/130874361/xixojesibib.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/miravijet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/book_for_synonyms_and_antonyms.pdf
    • https://cdn.shopify.com/s/files/1/0449/1198/4795/files/65271118864.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/the_curious_researcher_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/1042/3960/files/4939914187.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0589/files/28355255315.pdf
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/microsoft_sway_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/0975/3767/files/78727545008.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/a_sound_of_thunder_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/naruto_tabletop_rpg.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_off000059b2.bin
5fe8a6fed3a967e6460ceeca5451961f659c23690fab0d555cc362d388cb2e85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B2 5328 bytes
font_01_sfnt_off00006bb3.bin
00b6ddafe3e429b33c7cba1300871b39e6d7924f7035ed8dd1d152feb47a3a26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB3 13716 bytes

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