Malicious PDF — malware analysis report

Static analysis result for SHA-256 3329fb0c6db34f93…

MALICIOUS

PDF

38.9 KB Created: 2020-08-15 10:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09d8b1cffd20c91f64d2575e8c3effb6 SHA-1: e74ecba36b38f01e9491e09f26e9a9770519bbda SHA-256: 3329fb0c6db34f93a6fc23a0eb9258ac208c483948d04a11dcffbe13dae2e03c
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to lead the user to a harmful site. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The primary malicious URL identified is https://ttraff.ru/pify?keyword=vevo+app+free++for+pc, which redirects to a benign Shopify URL, but the initial redirector is the point of compromise.

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=vevo+app+free++for+pc
    • http://files.roisinburns.com/uploads/1/3/0/8/130814515/7036634.pdf
    • http://ronimo.kwtintl.com/uploads/1/3/2/7/132740606/1665440.pdf
    • http://files.the-war-machine.com/uploads/1/3/2/6/132695734/5519625.pdf
    • https://cdn.shopify.com/s/files/1/0431/8062/1985/files/60197438546.pdf
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/big_ideas_learning_algebra_2.pdf
    • https://cdn.shopify.com/s/files/1/0435/7701/6483/files/xidadowivudefozozunejuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/lutofapuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/algebra_2_and_trigonometry_textbook_mcdougal_littell.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/69836386394.pdf
    • https://cdn.shopify.com/s/files/1/0439/3431/8760/files/bimuzorotupalorazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/adenitis_mesenterica_en_adultos.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0972/files/ketetoke.pdf
    • https://cdn.shopify.com/s/files/1/0441/3777/5256/files/magodajutusozomuwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/jaxepu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2423/files/63659405899.pdf
    • https://cdn.shopify.com/s/files/1/0434/9716/0866/files/posenomo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0439/files/download_britannica_encyclopedia.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_off00005ab8.bin
40fa336eafb77ad3cf6433bd7b445a858171e43416f7c29b2a1215c53bef3dec
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB8 4824 bytes
font_01_sfnt_off00006b3f.bin
11a86d20982db3080bea74719550189f55fda4d4210a26c03732447556f1b7bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3F 10344 bytes