Malicious PDF — malware analysis report

Static analysis result for SHA-256 0449da1138df09e9…

MALICIOUS

PDF

37.4 KB Created: 2020-09-01 01:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c25f780fcad66c2d8fceba60a66e5a2d SHA-1: 6aad8168677e815783dcc2627baeb81d6a96817f SHA-256: 0449da1138df09e9780b1b89ded8f681b2461bcace1276701d79d03cb9c2278e
154 Risk Score

Malware Insights

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

The PDF document contains a link farm and a redirector URL, indicating a likely phishing or SEO scam. The document body, though obfuscated, contains the URL https://ttraff.ru/wix?keyword=manual+air+fryer+philco+jumbo, which is flagged as a malicious redirector. The presence of numerous Shopify links suggests an attempt to disguise malicious activity within a seemingly legitimate context.

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.ru/wix?keyword=manual+air+fryer+philco+jumbo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/1679/8886/files/63714350042.pdf
    • https://cdn.shopify.com/s/files/1/0440/8904/9238/files/74275644226.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/cercle_trigonomtrique_tableau.pdf
    • https://cdn.shopify.com/s/files/1/0441/3983/9640/files/antrenman_geometri_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3493/files/juwavoguvabululitowef.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/damp_heat_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0437/3741/5831/files/72448751218.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/30927833754.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/bollyshare_august_movies_july_race_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7963/files/lafivatonawis.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/15193729192.pdf
    • https://cdn.shopify.com/s/files/1/0435/8258/7039/files/83269554229.pdf
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/83786067792.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/mri_cervical_spine_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0437/7948/9950/files/tojuzobupazifenexaviz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/61983717978.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mosagewenusuwaguxizekud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004582.bin
9b8fd84485a7fc055a561a6506b9d1e1db74c17b9bb06fa73707d9e102272ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4582 5200 bytes
font_01_sfnt_off00005706.bin
42fbba44bdfbbf0924cfb0716b979c713f746c09bbe4f32c852cb7beedb8c127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5706 10396 bytes
font_02_sfnt_off00007a89.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A89 4324 bytes

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