Malicious PDF — malware analysis report

Static analysis result for SHA-256 c299886ec21feae9…

MALICIOUS

PDF

44.3 KB Created: 2020-08-09 22:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3dfff1ceb10ba19b5c1822a715c90fd SHA-1: 9b3686001b97e7eec6873a9c94d59fbc42a2f1a8 SHA-256: c299886ec21feae9cb5f1ab643d5f3804d22d785748426b7b9c19c6ce382cf91
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 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=tv+broadcasting+script+tagalog+2020+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious content. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning tactic to distribute the malicious PDF.

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=tv+broadcasting+script+tagalog+2020+pdf
    • http://files.franklincountyhypnosis.com/uploads/1/3/2/8/132813998/1e70760.pdf
    • http://files.eys-magazine.com/uploads/1/3/1/0/131070367/fixexorotoz.pdf
    • http://zubokukub.ashesofedenmovie.com/uploads/1/3/1/6/131606027/ad64d1a9a.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/skf_double_row_ball_bearing_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0428/6896/5532/files/kenurisew.pdf
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/waresejiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/gineluzikijiwubokorisus.pdf
    • https://cdn.shopify.com/s/files/1/0431/0486/2375/files/boxewuwizug.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/nofurefolufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/7140366956.pdf
    • https://cdn.shopify.com/s/files/1/0428/9354/1532/files/begikubufavobasorus.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/sozabu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4312/7447/files/jasisuweguxawevuganabuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/fallout_3_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/5045/7505/files/jabulitiwefitidevabiwar.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_off00006e0d.bin
ab5330b822e6d3f6445cfb0eea48373c3bd118cb4e0a664ef4e4c12192f8e31d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0D 5744 bytes
font_01_sfnt_off000081ab.bin
f34f5079232a0e40761298dcfa580ea5fd1d878b630a992213f816c0d2441b1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x81AB 9968 bytes