Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e414392f5568e4…

MALICIOUS

PDF

60.0 KB Created: 2020-08-31 06:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcda54b6b94870bce355767f34fb2c4d SHA-1: daa871c04ae6209a56025d1782d232da883267b8 SHA-256: 17e414392f5568e4c23d89c5a4f9f39f9022193fd24743d72cf4a0829be9f09b
174 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. The presence of a lure to enable content suggests an attempt to trick the user into interacting with the malicious link.

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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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/wix?keyword=how+to+cure+angular+cheilitis+overni
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/basic_spanish_vocabulary_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/2785/5517/files/tijegapezape.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/88319043842.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/ladutonekorimomanubiturim.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/wozixizonororedusegosek.pdf
    • https://cdn.shopify.com/s/files/1/0430/3853/9927/files/61907285587.pdf
    • https://cdn.shopify.com/s/files/1/0437/9105/7058/files/automatic_process_control_system.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/nalal.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/github_multiple_accounts.pdf
    • https://cdn.shopify.com/s/files/1/0434/0246/1351/files/44817217091.pdf
    • https://static.usrfiles.com/ugd/fb83f1_1fe6a171c2304d42a5a96b5c0ea2d75d.pdf
    • https://static.usrfiles.com/ugd/77eba6_d4cedaf2f6ce45ab85ffa957d4ffcf49.pdf
    • https://cdn.shopify.com/s/files/1/0439/0102/6459/files/gemaxod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8014/7359/files/70115381420.pdf
    • https://cdn.shopify.com/s/files/1/0432/5349/8019/files/1755284568.pdf
    • https://cdn.shopify.com/s/files/1/0433/8666/7158/files/zitapeforetikawif.pdf
    • https://cdn.shopify.com/s/files/1/0437/0048/6312/files/juegos_modificados_de_voleibol.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_off00009cd0.bin
57190e9698f42dc5e76b3142d039621a39fa023eca3f98c708d1fc24f1bc9ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD0 5056 bytes
font_01_sfnt_off0000ae0a.bin
4bee501162dc61ae9ee88f983cb700e6c033a922ad5389a013df79c784e0137c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE0A 11284 bytes
font_02_sfnt_off0000d461.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD461 4324 bytes

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