Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc32e872efff97ad…

MALICIOUS

PDF

38.5 KB Created: 2020-08-19 19:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da81defa1c521db70c8c1cb368e59efb SHA-1: 6f152e1bd758ba5bea17891a52b2b87934a8140a SHA-256: cc32e872efff97ad063ef00631864a855aba78309cbce6dc8d11d6f56bb3215a
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary URL, 'https://ttraff.ru/pify?keyword=game+naruto+rpg+online', is likely used to obscure the true malicious destination. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of numerous links, many hosted on Shopify, suggests a link farm or a method to distribute malicious content through seemingly benign platforms.

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/pify?keyword=game+naruto+rpg+online
    • http://files.3spellcastersandadwarf.com/uploads/1/3/2/3/132303245/6dde349de83c96.pdf
    • http://files.islandfishingkauai.com/uploads/1/3/1/4/131453651/63e4b6b45.pdf
    • https://cdn.shopify.com/s/files/1/0439/3123/8555/files/20280293875.pdf
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/hatoful_boyfriend_steam_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/4374/7990/files/68394552009.pdf
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/massey_algebraic_topology.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/63158042058.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/gasigikapotu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/jisufamesibotakodido.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/join_anyone_on_roblox_script.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/zalabepadaga.pdf
    • https://cdn.shopify.com/s/files/1/0436/1040/7069/files/47891597697.pdf
    • https://cdn.shopify.com/s/files/1/0435/5027/7791/files/wallpaper_3d_for_android_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/papizopuvonewamezinovefe.pdf
    • https://cdn.shopify.com/s/files/1/0427/9857/9879/files/2266072284.pdf
    • https://cdn.shopify.com/s/files/1/0432/7918/8118/files/45573013242.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_off000059d5.bin
e802ef23f228c8f7d835c25ee84af63be646bcda2ece6799fad1187a85269fe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D5 4992 bytes
font_01_sfnt_off00006ac4.bin
ade0f5004c6a8f51d456d089f070cf75cbd308ad1e800c2afa1614942093d177		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC4 10084 bytes

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