Malicious PDF — malware analysis report

Static analysis result for SHA-256 6771a521b450041b…

MALICIOUS

PDF

39.7 KB Created: 2020-09-08 15:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78ba0aa132635133709f07cb73006b2e SHA-1: 9b96b5ba4f6d230718b3eb6dee423bf18f535980 SHA-256: 6771a521b450041b6d6efe0e9c90e304d774f0f167ec62344ffc45a8fe08682a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a primary malicious redirector URL, suggesting a phishing or scam attempt. The embedded URL `https://ttraff.me/wix?keyword=free+angular+6+material+template` is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to lead users to potentially harmful content, likely as part of a phishing campaign.

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.me/wix?keyword=free+angular+6+material+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/3e0cb9_79a36b1817b9461b948b2a6ce705e6a0.pdf
    • https://static.usrfiles.com/ugd/8de238_8fe3334ab995447784ef1e8b00e6817c.pdf
    • https://static.usrfiles.com/ugd/db93e9_27ed204572cd48358cda979fdfd0c84d.pdf
    • https://static.usrfiles.com/ugd/b8c837_43e3d64818224ac5b1e3f2e38b3bbd34.pdf
    • https://static.usrfiles.com/ugd/d4df0f_ead2f95d07fd4ef189ddbd57c7ea3aeb.pdf
    • https://static.usrfiles.com/ugd/23e9be_03487993d3524fe282a1bbcb1a72b564.pdf
    • https://static.usrfiles.com/ugd/384ea4_f727c9673bae4daf87e1a1e954822c48.pdf
    • https://static.usrfiles.com/ugd/99a8f2_703c39adb42244e7b3136f7593ded591.pdf
    • https://static.usrfiles.com/ugd/63022f_db1aefe6f2bc4731a00269308d37a57b.pdf
    • https://static.usrfiles.com/ugd/55f640_620033f9f36845958a9e2a6df6ee5ac2.pdf
    • https://static.usrfiles.com/ugd/b8c837_5dc92c6212214c899a1e276f0a8fa8fb.pdf
    • https://static.usrfiles.com/ugd/b42fd6_2ba2e361f54e4162b4b049299d5b04b6.pdf
    • https://static.usrfiles.com/ugd/d5cf39_b63522c105824755b70606c2c0df1ce5.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_off00005dee.bin
9abeed6e732eda1a30e5f53a15a60222105729947eb50d6fafa4ad27263dd299
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEE 5068 bytes
font_01_sfnt_off00006f1b.bin
f12b355e63738c593adec3a947ebb784957ba0a2a83a64409314103da6c0e322
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1B 10260 bytes