Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2bc9ebaf42b2b1…

MALICIOUS

PDF

41.1 KB Created: 2020-09-03 00:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7a096b8ca44fa7b8c2cb3f29882bd4f SHA-1: 5f3268e42060ac94ce14a59189c8712db527678b SHA-256: 7e2bc9ebaf42b2b128861f563db7264ae0230b79fc0fefb2c6a660f8645fd220
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates an attempt to redirect the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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=google+sheets+right+to+left+table
    • https://static.usrfiles.com/ugd/909b15_997951e38852472db03393d57e5f82e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_077be8bd44074cc59e5e93c322d316e4.pdf
    • https://static.usrfiles.com/ugd/f1d680_8846a9684cec47b185f28ea2937dadff.pdf
    • https://static.usrfiles.com/ugd/38eac1_080305fb342c4a8791b74788c7d4e126.pdf
    • https://static.usrfiles.com/ugd/b4a829_182c590d943b4afcb4e0018639d37666.pdf
    • https://static.usrfiles.com/ugd/bcc0e4_6ad76c1919054f5a8d568f62a70f37e8.pdf
    • https://static.usrfiles.com/ugd/fb83f1_7ac195229a474688857aeba39fc8b5b2.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/zodewipujopuzob.pdf
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/wurarasuxiri.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0734/files/32150828058.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89965927340.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/bacteriologia_medica_libros.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/62311665437.pdf
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/reragure.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/92414401119.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/telunutenotakun.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_off000061a8.bin
81f1bd0108eb1c0ebb4b887991fa45be54c75b49c85454bb21c859b7a127a41c
pdf-font-stream PDF embedded font (sfnt) at offset 0x61A8 5200 bytes
font_01_sfnt_off00007358.bin
8d8dc6434a76b954c3bd8a4a51535954881ee55541ded3f60b7cdfd8a2b828c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7358 10596 bytes