Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8eb3ad5279194b…

MALICIOUS

PDF

38.5 KB Created: 2020-08-18 20:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3346d9a8adbfc761235caf1918abeaff SHA-1: a8037d3fd11448e7f3e37b74eba8d8ef0f1df822 SHA-256: 6e8eb3ad5279194bdccece2a3bd3838b6cfe48df8292d3b2d73ee66eb8931024
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many of which point to a link farm hosted on Shopify. One prominent link, disguised as a police report, redirects to a malicious URL (ttraff.cc). This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact payload.

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.cc/pify?keyword=fairfax+county+police+department+daily+incident+report
    • http://files.mrwildinghomeroom.com/uploads/1/3/2/6/132683328/nasolaj.pdf
    • http://ximapode.sunshinecoastsecretsanta.com/uploads/1/3/1/4/131406717/6118483.pdf
    • http://files.shopsoutherngristbrewing.com/uploads/1/3/1/4/131406610/jejuzop.pdf
    • http://files.vargislab.com/uploads/1/3/2/6/132681443/boxezisaru-rajoxum-gaduvoke.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/0631/2091/files/21331535296.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6161/files/durable_power_of_attorney_north_carolina_form_adobe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/1455009344.pdf
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/fabuzuxaginefewawuwaki.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/rosimumovepelaneka.pdf
    • https://cdn.shopify.com/s/files/1/0447/9506/8567/files/swedish_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/hbr_guide_to_project_management_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/kavarapimupekupu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/vukekojexufaninagoboji.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/65057012344.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_off0000588b.bin
c53410a5402066ab9049c18735c035104e314002e4d710bcb2fa7e6db048c779		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588B 5248 bytes
font_01_sfnt_off00006a5b.bin
fbb0c4445ad432e8987c44d3f5a216251eb1dee2444f6b06dceb16b6304ab849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5B 10136 bytes

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