Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b77fc40815d3715…

MALICIOUS

PDF

111.1 KB Created: 2020-08-30 02:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04de49e1405dec14582eaeee2d44600e SHA-1: e00dcd091b9383384af404b8e9f8e7bac85ca338 SHA-256: 7b77fc40815d37154dc44372845b9e950e85b655f45f298052e5648a29cbf180
154 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with at least one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing users to the malicious URL: https://ttraff.ru/wix?keyword=%25D9%2585%25D8%25A7+%25D9%2587%25D9%2588+bbg, likely as part of a phishing or scam 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.ru/wix?keyword=%25D9%2585%25D8%25A7+%25D9%2587%25D9%2588+bbg
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/cardboard_guitar_stand_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/62550747500.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7867/files/farepuvinof.pdf
    • https://cdn.shopify.com/s/files/1/0431/5761/8850/files/pifikawemogu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/77289355820.pdf
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/28630844056.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/34769394909.pdf
    • https://cdn.shopify.com/s/files/1/0434/6078/8390/files/63936717842.pdf
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/nides.pdf
    • https://static.usrfiles.com/ugd/cdb50c_ac47a10b8bfb4fb1ab8348b3cdbebb99.pdf
    • https://static.usrfiles.com/ugd/0a0016_587b683a09dc428281e3c4e69c07e068.pdf
    • https://static.usrfiles.com/ugd/b8c837_4810765cda42431fb55a6e2685f164f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_52cc22bbb8c04c398fb28627c88c81bb.pdf
    • https://static.usrfiles.com/ugd/c345b0_0c577fa465de4f1c9c2af06d58b3ddba.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0001734a.bin
7dfaa171e201ccd5f1ed5b33001f758ea41a623d7d3d5bc72f0232049d9d601f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1734A 33800 bytes
font_00_sfnt_off00012c22.bin
c7c1d07851ce559ed9551bae21e8d7122a3e2754ed5807d601ecba7c6fb96304		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C22 4380 bytes
font_01_sfnt_off00013b28.bin
7b807efefbae56eb625e17b0ce218ba7c5f33484d0343431e0a39f160aa0f7a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B28 16640 bytes
font_02_sfnt_off00015260.bin
7d53285a372b1df24529d1ca5fd76361f82fe704eb9b4f89c8ac54548f199924		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15260 9564 bytes

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