Malicious PDF — malware analysis report

Static analysis result for SHA-256 81ad0aee63c1aa9c…

MALICIOUS

PDF

44.8 KB Created: 2020-08-12 04:52:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f56531bb8f991c5b7bcecac5b2d81667 SHA-1: 4e275702abfee6d85ddd5ff8e237d83478078e69 SHA-256: 81ad0aee63c1aa9c8a818b80379e7da2b4742415ec2df44d548f0f5402df24d9
128 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to `ttraff.ru`, a known malicious redirector. This suggests a link farm or phishing lure designed to funnel users to malicious infrastructure. The presence of a 'download button' heuristic further supports a deceptive workflow. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=movement+break+cards+pdf
    • http://files.njapphotos.site/uploads/1/3/1/4/131437307/kejibi-seboropetavet.pdf
    • http://files.yourdayweddingsindiana.com/uploads/1/3/0/9/130969160/47ebb56a1e08d48.pdf
    • http://pubak.mballew.com/uploads/1/3/1/3/131398404/nokezojosotuf.pdf
    • http://xalik.1milliontitleones.com/uploads/1/3/1/3/131398367/rosomi.pdf
    • http://tusefa.arcangeli-boats.com/uploads/1/3/1/3/131379877/6668248.pdf
    • https://cdn.shopify.com/s/files/1/0432/6001/8852/files/galaxy_note_8_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/1975/3879/files/quantitative_aptitude_formulas_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/sipabigaloxe.pdf
    • https://cdn.shopify.com/s/files/1/0436/9488/2984/files/keziza.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4602/files/14630526900.pdf
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/13167030061.pdf
    • https://cdn.shopify.com/s/files/1/0433/4980/3162/files/pixowamefi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4937/6161/files/muninawolojodiva.pdf
    • https://cdn.shopify.com/s/files/1/0435/8022/7747/files/37674849555.pdf
    • https://cdn.shopify.com/s/files/1/0435/2176/9627/files/rolling_stone_s_top_500_albums.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/35929607011.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/26485928330.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6833/files/tafetadixu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006358.bin
4333ea42a8d6103a26b1b2bf52e1cfc018f375a02144fb09d4b1fcff235fda8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6358 5280 bytes
font_01_sfnt_off00007533.bin
ed2aa5f50d3a12ec42608d1eaf53a73742e74068859bf37dc1c2535edc994613
pdf-font-stream PDF embedded font (sfnt) at offset 0x7533 10292 bytes
font_02_sfnt_off0000986c.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x986C 4324 bytes