Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a75f36764abe779…

MALICIOUS

PDF

48.8 KB Created: 2020-08-09 13:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48a535c1c4915a357257ce25542660a2 SHA-1: 8e4b0c409f6eebd702005dd9f62fa211e22b69b6 SHA-256: 6a75f36764abe7793c9962659c875b03ab8e2be133d7dddfe310ca529021c639
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a malicious redirector, ttraff.cc, which is disguised as a guide for making hand sanitizer. This suggests a phishing or scam attempt. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm designed to manipulate search engine results or distribute malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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.cc/pify?keyword=como+hacer+alcohol+en+gel+pdf
    • http://files.metropolisofbostoncamp.org/uploads/1/3/1/6/131636789/sivimotumofemo-muvotu.pdf
    • http://duxeronaj.energyhealingconference.com/uploads/1/3/2/8/132814930/9798650.pdf
    • http://files.monfortestatesdacula.com/uploads/1/3/2/6/132681002/226bb98.pdf
    • http://files.marissasimmons.com/uploads/1/3/2/3/132302907/2573033.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7342/0963/files/attendance_sheet_excel_format.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/10773966238.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/3849996171.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/brave_new_world_characters.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/44143539963.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/dikitizogogipefel.pdf
    • https://cdn.shopify.com/s/files/1/0429/4161/2199/files/16093122976.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/199707587.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/37615458572.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/futajikodevireko.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/73532213693.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006671.bin
06d31140b24f8378046aeda370b858980973908f292e40a7925695611970a45a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6671 5296 bytes
font_01_sfnt_off00007847.bin
f702c253434a73732a037b5c5c6074f49b04e4af97ed01209292929f9cdee30d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7847 11880 bytes
font_02_sfnt_off00009f1f.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1F 16204 bytes

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