Malicious PDF — malware analysis report

Static analysis result for SHA-256 10015f277cca10f7…

MALICIOUS

PDF

112.8 KB Created: 2020-08-20 22:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1a0a7c2bba6342ef59ba8c93b241262 SHA-1: 3f485899130460d0e36ee2dc4786f3ae1094bad1 SHA-256: 10015f277cca10f71114be00c5e5269bbfe8d8eee820285ae6fa46248b708aff
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=despotism+3k+event+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are to benign Shopify URLs but one points to 'http://levaziw.br3h.com/uploads/1/3/0/7/130775607/3803376.pdf'. The document body, though partially corrupted, contains text suggesting it is an 'event guide' and includes the malicious URL, indicating a social engineering lure.

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.com/pify?keyword=despotism+3k+event+guide
    • http://levaziw.br3h.com/uploads/1/3/0/7/130775607/3803376.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/activated_carbon_filter_for_wastewater_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0430/2703/8359/files/85774847849.pdf
    • https://cdn.shopify.com/s/files/1/0429/4482/3452/files/story_elements_organizer.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/30421520101.pdf
    • https://cdn.shopify.com/s/files/1/0450/2405/1358/files/pyrexia_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/craft_beer_book.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0726/files/kindle_read_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/8371/9071/files/67736988659.pdf
    • https://cdn.shopify.com/s/files/1/0440/0558/9157/files/sinafexibebejogixudaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/8414711944.pdf
    • https://cdn.shopify.com/s/files/1/0434/3988/2402/files/grande_ecole_movie_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/class_11th_ncert_biology_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/41818095107.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_off00016a5f.bin
95a650bd02751142985ddb3d68c82f94098ceeae50f8cb0e89f9ac1c60778540		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A5F 4376 bytes
font_01_sfnt_off000179cb.bin
f533b448df88daab38ae8e1e16d92be0d00bc62b57b9bb68e4ab17ad1539d462		 pdf-font-stream PDF embedded font (sfnt) at offset 0x179CB 5228 bytes
font_02_sfnt_off00018b9a.bin
023076223aab09e1b7622afc2b5b5e5cd39cd442f1bcdc95dd5050f10681e1ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18B9A 13640 bytes

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