Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fd416de762161b…

MALICIOUS

PDF

39.9 KB Created: 2020-08-09 13:42:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9bdfafa19a38becb2f17555021fed73 SHA-1: 15b7654d76d45e105aa500c8c5381cd86aefcbf4 SHA-256: f9fd416de762161b7aea517f368edef96c7b26308422eb832aea8c0d35605d0d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a deliberate attempt to create a link farm, likely for SEO poisoning or to distribute malicious content. The ML classifier strongly supports the malicious nature of this document. The primary attack vector appears to be luring users to click on these links, leading to potentially harmful destinations.

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.cc/pify?keyword=angularjs+5+pdf
    • http://files.crossbowlectures.com/uploads/1/3/1/6/131606118/sebeni.pdf
    • http://files.westfieldhighschoolgirlsicehockey.com/uploads/1/3/1/4/131483445/wosokizinewa.pdf
    • http://files.northshoremandarin.com/uploads/1/3/0/7/130740325/kawariz.pdf
    • http://files.quigglecollective.com/uploads/1/3/0/9/130969874/4657814.pdf
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/vamitopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/98231134057.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/12900720570.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/bowasakofagexarixoxavo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.pdf
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/52803862246.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/academy_stars_1_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0906/files/willpower_baumeister.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/vixezesaxakefopubefajiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/18844750343.pdf
    • https://cdn.shopify.com/s/files/1/0428/6283/7919/files/vileza.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_off00005daf.bin
8dd90290c2ebf829057acb1bfac2ea147ac445f589f3a1a2807fb2693c99e635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAF 5400 bytes
font_01_sfnt_off00007027.bin
e65abecfada123d0501dfeb1b1e17beaffa6042faf29f205e42ee51d2245bcd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7027 10336 bytes

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