Malicious PDF — malware analysis report

Static analysis result for SHA-256 059f5a5ee4faec8a…

MALICIOUS

PDF

53.8 KB Created: 2020-08-19 18:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3ec96091bbbbf057950fc6f0f38f43f SHA-1: 67020ea9f4d8d01a0341b5947ae7c98b5bf56f51 SHA-256: 059f5a5ee4faec8a7f2e03bde789ccd2ac7c4f25860a5bc3b16969f3126c6d5a
194 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 'https://ttraff.com/pify?keyword=cacti+threshold+templates'. Additional heuristics indicate a PDF link farm, suggesting a spam or SEO abuse campaign. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent. No scripts were extracted, but the presence of embedded URLs and the redirector link strongly suggest a phishing or scam attempt.

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/pify?keyword=cacti+threshold+templates
    • http://nulatiga.yeaflicker.com/uploads/1/3/1/6/131606629/suxenavoga-dakedopuku-vujovun.pdf
    • http://files.stmarkscocoa.org/uploads/1/3/0/8/130813710/654e8f43.pdf
    • http://files.randyschutt.com/uploads/1/3/0/9/130969470/9457317.pdf
    • http://kivita.xaviermassart.eu/uploads/1/3/1/3/131383629/wajapo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/adobe_indesign_cs6_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdf
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/spatial_data_analysis_by_example.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0156/files/dodakizatozevi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6682/files/nctb_books_of_class_11_12_english_version_2020.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/drift_fortnite_mask_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0558/files/burorufanifiwikorunug.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/bijolinepagofenifusopipev.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5013/files/80792484038.pdf
    • https://cdn.shopify.com/s/files/1/0438/8257/8088/files/blackfathom_villainy_horde.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7688/files/statistical_methods_for_speech_recognition_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008890.bin
2db87d588bc536faf68a32f742dc041f5750b805c8e7174f4259bdcbf391e04d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8890 5220 bytes
font_01_sfnt_off00009a1e.bin
e37630cfe9e648d79839ccd2e7f60ad58059fa858e96305eaffa3d92de1c143e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A1E 15492 bytes

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