Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0bfa8a492caeaa…

MALICIOUS

PDF

52.2 KB Created: 2020-08-15 00:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52a8766e3f077ddcfcc7cf9d6451b256 SHA-1: faa9eeb0f9a495a8879a7938f4a790c2c84321aa SHA-256: ed0bfa8a492caeaa5a8331d8ccc0ee5f31bee64ed6017f00b272cfc414698681
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDFs hosted on various domains, including Shopify. The presence of a link farm and a malicious redirector suggests a phishing or malware distribution attempt. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.

Heuristics 3

  • 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.
  • 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=abrasive+jet+machining+video+free
    • http://files.premierheartgroup.info/uploads/1/3/1/4/131437775/wabowixisaputilosogi.pdf
    • http://files.mountainmodelaires.org/uploads/1/3/1/4/131482959/pizanawowinutavored.pdf
    • http://files.chardontomorrow.org/uploads/1/3/1/8/131871992/givotowuka.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/free_reloading_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/55842040199.pdf
    • https://cdn.shopify.com/s/files/1/0428/6598/3655/files/mapa_fisico_de_africa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6457/3593/files/41377310291.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/cyclops_depth_module_mk2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/third_conditional_reading_comprehension_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/8095/7593/files/bekomukapitalineduvoki.pdf
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/child_psychology_articles.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5267/files/88200040041.pdf
    • https://cdn.shopify.com/s/files/1/0451/9782/0053/files/livros_de_alister_mcgrath_em.pdf
    • https://cdn.shopify.com/s/files/1/0429/3669/6995/files/functional_occlusion_dawson.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_off00008d3f.bin
d9db2d73de4d1239547825987c26c7fb70c303f2c8bbc196ca346b9d6e6bb591		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3F 5668 bytes
font_01_sfnt_off0000a065.bin
7616d2cfe728bf54774799fb6eace0d11584aa8a547a9713f69914300d4c16b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA065 10304 bytes

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