Malicious PDF — malware analysis report

Static analysis result for SHA-256 17acd8f284f2bbb6…

MALICIOUS

PDF

46.4 KB Created: 2020-09-06 04:39:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19eeb089718b55611b88bc45986e832a SHA-1: f3e81d4b41fa7d25adde89826c44ca0903d0e1a6 SHA-256: 17acd8f284f2bbb6bf3bb11d69bdc0051162d466e0a71d9406a060ec09e3f348
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, ttraff.me, which is likely used to funnel victims to malicious sites. The PDF also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicated maliciousness, and the presence of a redirector link points to a phishing or scam attempt.

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=netbeans+for+php+windows+10
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/32320006581.pdf
    • https://cdn.shopify.com/s/files/1/0430/9090/3193/files/4603208153.pdf
    • https://cdn.shopify.com/s/files/1/0433/1316/8542/files/kuwelalenaligajenazitore.pdf
    • https://cdn.shopify.com/s/files/1/0432/1162/0509/files/lease_agreement_form_in_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0461/9436/0469/files/safety_incident_investigation_report_writing.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/apt_x_bluetooth_headset.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/7328617894.pdf
    • https://cdn.shopify.com/s/files/1/0435/6902/1089/files/53126157889.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/xcw_wrestling_porn.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6041/files/91174115188.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/18274951495.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/summary_of_lower_limb_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/1942598565.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_off00007080.bin
d9b52b7b65de39f9149d59fc7511f387af0a4bd542dd14b943dc360ac88c3a96
pdf-font-stream PDF embedded font (sfnt) at offset 0x7080 5492 bytes
font_01_sfnt_off00008341.bin
e5ee419320828fa7f289dd119ec7281a1c3be5930f625dc5f062cf1293d00532
pdf-font-stream PDF embedded font (sfnt) at offset 0x8341 12928 bytes