Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b32bed8cc6bc4d7…

MALICIOUS

PDF

39.2 KB Created: 2020-08-21 15:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c76e6e1c2d2cbd41d7d70667d5623cfa SHA-1: c880c598d0f67e21fff25c7c2b21a810c13f9c40 SHA-256: 3b32bed8cc6bc4d7f87cdeb1d5d8cd732a66638a76334ab16201358857b4a7a9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=alcatel+one+touch+pop+star+firmware'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify domains. The ML classifier strongly flagged this PDF as malicious. The document body, though partially garbled, contains the same suspicious URL, reinforcing the intent to redirect the user.

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=alcatel+one+touch+pop+star+firmware
    • http://files.soultouchtherapies.com/uploads/1/3/1/8/131856306/c327f0a657.pdf
    • http://verudo.dennispatrickwoodphd.com/uploads/1/3/1/6/131606577/5596119.pdf
    • http://files.awanaset.org/uploads/1/3/0/9/130969681/votaxejeniji_gubujeril.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5372/files/xemumofujusuduko.pdf
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/masatunipo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/79956832147.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/66821570356.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/the_arrl_ham_radio_license_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/unholy_dk_talents.pdf
    • https://cdn.shopify.com/s/files/1/0440/7640/0792/files/lakatuvurolanodi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/la_cabala_y_el_tarot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31995481059.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72905654063.pdf
    • https://cdn.shopify.com/s/files/1/0452/5948/9442/files/b_scan.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_off00005c04.bin
6546806c9a0f4556fef0ada33321dee7d9621bbc1a00c7cf8c143051ddc65696
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C04 5336 bytes
font_01_sfnt_off00006e06.bin
de2772db2137ff70ca5a2bbaedda225226402f8cd31db51ec40ac98ba4b49ac7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E06 9960 bytes