Malicious PDF — malware analysis report

Static analysis result for SHA-256 01341ea5af190915…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 05:47:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49c1f7a3420c89ef30f474da0412ada1 SHA-1: 8ed990fedb73f8315cb74883012d01aba2cc8205 SHA-256: 01341ea5af1909159137b968e5816dd17c123bf8fbe0d0039e2218eb4b0364a8
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. The document body and embedded links suggest a lure to a fake college guide, aiming to redirect users to this malicious infrastructure. The presence of numerous external PDF links further supports a link farm or SEO manipulation tactic.

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/wix?keyword=fiske+guide+to+colleges+2020+online
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0465/5241/6414/files/good_morning_rose_photo_hd.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0375/files/xejoma.pdf
    • https://cdn.shopify.com/s/files/1/0440/2534/8261/files/continuous_integration_mcq_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/2176/9627/files/nikon_p510_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/wisolukij.pdf
    • https://cdn.shopify.com/s/files/1/0432/9547/3822/files/hola_vpn_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/dukupokolowubapakapimix.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/bexomitagifarad.pdf
    • https://static.usrfiles.com/ugd/b98abb_6c19935e1e8741baa5d7f62f94298cef.pdf
    • https://static.usrfiles.com/ugd/93c935_46c78ba609b94c6fb74f7e03ec12d84b.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb28072733b24862b11105ec8d3431bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_f26c6ce6ec10422b8e65ee616349fbbb.pdf
    • https://static.usrfiles.com/ugd/d5cf39_1652fd49bf374369aa51ce7166602f96.pdf
    • https://static.usrfiles.com/ugd/41a0b6_c7a63038041441eb8e9e6d25a55ee242.pdf
    • https://static.usrfiles.com/ugd/345929_705d83ca38104ffa9a4680f28507360a.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e4.bin
bbf5fd16f36ac2550af40c8ff80dff7ca343be9110325c1fc07b11cf9b45b05b
pdf-font-stream PDF embedded font (sfnt) at offset 0x63E4 5096 bytes
font_01_sfnt_off00007556.bin
6911494254a9f93bc3a8e057c34ba73f9a991e629f4d7beef6378a6057eaf9ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x7556 10444 bytes