Malicious PDF — malware analysis report

Static analysis result for SHA-256 acae9742322cea0c…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 00:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e0ebc951666ccaf07e882519e361bb3 SHA-1: 60a537bf0fab353396aa69536261b5a14a4a7d46 SHA-256: acae9742322cea0c3e11d74c373b641e45dae5dcbe3282d3d181b291ce9e3ee3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link disguised as an offer for 'Spotify premium free'. This link, when clicked, redirects through a malicious domain (ttraff.com) which is flagged as a redirector to malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious content.

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=spotify+premium+free+ios+12.+2
    • http://files.ewctheexchange.com/uploads/1/3/1/4/131406885/63e7c261b596.pdf
    • http://duwefefe.templemedsga.com/uploads/1/3/0/8/130873947/xepipokasuzudiv.pdf
    • http://files.epixcme.com/uploads/1/3/1/4/131406075/823fca5cc28a5d.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/6006/files/vajolavomalavopavekujowak.pdf
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/zifivujig.pdf
    • https://cdn.shopify.com/s/files/1/0434/6583/4649/files/structure_of_the_earth_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/46494802651.pdf
    • https://cdn.shopify.com/s/files/1/0440/5598/6341/files/13092697031.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/pavivewigoguvafe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4967/2091/files/budget_adoption_fact_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/shri_durga_argala_stotram_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/48571121206.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/misebok.pdf
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/43351186999.pdf
    • https://cdn.shopify.com/s/files/1/0441/1277/3272/files/pemeluzazaduwofu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/vozututirix.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/97014068608.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_off0000698b.bin
a3db07a3ff02ac665522a67de461021232788097c9c40fa4fffe248736cd58b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x698B 5224 bytes
font_01_sfnt_off00007b53.bin
cff6022a2dd460c4c7bb53a0d10701b9e6ed32b19762de92502d6b8011c4a1a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B53 10268 bytes