Malicious PDF — malware analysis report

Static analysis result for SHA-256 191e412fe17c7c8f…

MALICIOUS

PDF

43.5 KB Created: 2020-08-19 06:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0aa922bce36f28ac9394e568e56109f0 SHA-1: 8f4e22a88242fc2b0ad4380abab6618c73f53aa2 SHA-256: 191e412fe17c7c8fc65ee5796ea5199ad3d9123a2291c869a3d400c386f433db
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=home+alone+3+full+movie'. Another critical heuristic indicates a PDF link farm, with many links pointing to shopify domains. The ML classifier strongly flagged this PDF as malicious. The document body contains text related to 'Home alone 3 full movie' and the PDF creation tool, likely serving as a lure to encourage clicks on the malicious links.

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=home+alone+3+full+movie
    • http://beget.fremannfoods.com/uploads/1/3/1/8/131856161/wabarala_xonekabe.pdf
    • http://xoveg.bigwhitebarnyoga.com/uploads/1/3/2/6/132681352/1e719c6d106f6d2.pdf
    • http://muduxawo.lansingrenegades.org/uploads/1/3/1/6/131637814/c91b8.pdf
    • http://dodosot.healingafterwar.com/uploads/1/3/1/1/131164250/8685360.pdf
    • http://boderalo.williamcottam.com/uploads/1/3/0/7/130740490/sonolowefa_vowafedevope_walanovuwowesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6090/files/8309503712.pdf
    • https://cdn.shopify.com/s/files/1/0436/5628/2265/files/75706628790.pdf
    • https://cdn.shopify.com/s/files/1/0429/6491/0243/files/49805359082.pdf
    • https://cdn.shopify.com/s/files/1/0437/7221/5458/files/fivipotuzedixokog.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/xosufesoduveji.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/french_grammar_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2480/files/31458260548.pdf
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/92141410438.pdf
    • https://cdn.shopify.com/s/files/1/0432/3141/2379/files/tusutagus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikumakosesik.pdf
    • https://cdn.shopify.com/s/files/1/0430/3149/4810/files/beta_glucuronidase_reporter_gene.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/70386563901.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_off00006c6e.bin
8672bd14e201298dd44176d2a668fd5cad78984c42a0fd842f7190fa7a67ac36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6E 4824 bytes
font_01_sfnt_off00007cce.bin
87d1a63ac0238c01673912febbd0bb9be75a4a2b076b54440bcd51d51a0116ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCE 10652 bytes

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