Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bfca6ce0b5a8f5d…

MALICIOUS

PDF

49.3 KB Created: 2020-07-29 19:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f71c6bbace945cc3abd7392367323469 SHA-1: ba9c682fcf4d43d4ff61e2bb8e0bebbb143f4d0f SHA-256: 3bfca6ce0b5a8f5d0eef02fb0e8eab49fd74b89042f92ca619b736e3c0dc8fae
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF SEO link farm, with numerous links hosted on 'cdn.shopify.com', suggesting an attempt to distribute malicious content through a large number of seemingly benign URLs. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and appears to be junk data, offering no direct insight into the user-facing lure.

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.com/pify?keyword=adjectives+of+appearance+and+personality+pdf
    • http://files.broadbandaccess.org/uploads/1/3/2/6/132682204/c6269dcea.pdf
    • http://files.ponderosaathleticboosters.com/uploads/1/3/1/3/131384101/wokum.pdf
    • http://files.sarahruthless.com/uploads/1/3/0/9/130969834/3c65b53ee25.pdf
    • http://files.alphaconllc.com/uploads/1/3/1/4/131453024/fomagukinote.pdf
    • http://files.ddtmassage.com/uploads/1/3/1/1/131163737/sakovimujom_kubuzuzesipekek_lipoginugaj_gikepavaxik.pdf
    • http://files.alphaconllc.com/uploads/1/3/1/4/131453024/fomagukin
    • https://cdn.shopify.com/s/files/1/0434/0957/1997/files/zojepeledaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1028/5983/files/dulofawa.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/kironopurif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/zobepak.pdf
    • https://cdn.shopify.com/s/files/1/0432/7509/2132/files/sipolituxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2557/files/8338392249.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2245/files/fodepaxezimuwujirex.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/10077306954.pdf
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/bepap.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/rolebosaromogeruxarifud.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9735/files/38118157723.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_off0000836a.bin
f533acb7e51e34c2a33871ddcd6e31cd9ad7951ad74fed47a52c4bd1a7643266		 pdf-font-stream PDF embedded font (sfnt) at offset 0x836A 5164 bytes
font_01_sfnt_off00009516.bin
c41868280e1494c1c316168841d577636e687aa2430971994734010f1b6b1beb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9516 10116 bytes

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