Malicious PDF — malware analysis report

Static analysis result for SHA-256 05441b174846f7c0…

MALICIOUS

PDF

36.1 KB Created: 2020-08-14 14:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7424c53ce6fb29279ab37a1beac01a11 SHA-1: 7c401a0d8742d8c4b868da74e9c28db7023627be SHA-256: 05441b174846f7c0533189080480af850e4207b7d1eebebf91b1168b53351473
162 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document also contains a large number of links to other PDFs hosted on Shopify, potentially as part of a link farm or SEO manipulation tactic. The presence of a 'download button' lure further supports a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • 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=lagu+blacklisted+me+reprobate+romance
    • http://riwebig.pinmag.online/uploads/1/3/1/3/131398244/zubaz.pdf
    • http://mamagibob.feathersalliance.com/uploads/1/3/0/7/130775677/guxufuzoziz_ligokupimino_pivuwonoxidujo_jagokoji.pdf
    • http://files.theimperfectmd.com/uploads/1/3/1/4/131452741/romonebuxamur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/8039/1583/files/malikumadokubuma.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/280680.pdf
    • https://cdn.shopify.com/s/files/1/0434/4519/0821/files/76750704281.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/access_github_from_terminal.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/35657625948.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/vimufib.pdf
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/loweleromiputijujid.pdf
    • https://cdn.shopify.com/s/files/1/0431/6699/0498/files/zojat.pdf
    • https://cdn.shopify.com/s/files/1/0434/1265/2194/files/paradise_lost_book_1_poem.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/how_to_open._ai_files.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/pavasudufula.pdf
    • https://cdn.shopify.com/s/files/1/0434/4233/9992/files/bemubepijadirane.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/mom_and_son_comic_porn.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/47205692622.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_off00004f41.bin
e7f09f2b455affb215e0d124445841d645ae52bac3b2d3a8f5cd7c47e63c0272		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F41 5536 bytes
font_01_sfnt_off000061f4.bin
8c412c61aa14c90dbdc05b04c07b973ea01043a348652d787016563d5e269822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F4 9796 bytes

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