Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d845cf34711101a…

MALICIOUS

PDF

61.0 KB Created: 2020-08-15 08:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df609cc0e9a52f152899d723ec50f840 SHA-1: 8acf071a678230f3da79d0004d0b934802b1125a SHA-256: 0d845cf34711101af399a46620ac1ca43e1df45ffbbc336ec08f2369f49d215a
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure, directing users to 'ttraff.ru'. This suggests a phishing or scam attempt designed to lead users to malicious infrastructure.

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=anaphylaxis+australian+guidelines
    • http://files.bullbearkidsbooks.com/uploads/1/3/2/6/132681404/medewesiposade.pdf
    • http://files.hogtownexperience.com/uploads/1/3/0/8/130874284/fugitumufofobil-lebifiwa-kedizajudum-zuzesigitoxiv.pdf
    • http://files.reinheitlandscaping.com/uploads/1/3/0/9/130969790/3413828.pdf
    • http://ribadazow.stabilizationsupportservices.org/uploads/1/3/0/8/130873825/2238355.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/4145/4240/files/66929942699.pdf
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/plano_metro_y_cercanias_madrid.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/zovogebejumi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/bujakagamejakid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/felamisakawubibaxejurelok.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/zefesogunuwaxobuzow.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/hit_the_button_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/edit_free_freeware.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/sotukorajiwiladu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/panilodorelekade.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/24037059770.pdf
    • https://cdn.shopify.com/s/files/1/0432/6732/6112/files/periodic_table_image.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/fuxoka.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_off00009910.bin
9867fedc30bf6b4d4e503e405a47ed11f908ae0512c75272246318e17c9169a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9910 5152 bytes
font_01_sfnt_off0000aa8a.bin
ebe100299ad6696dc4913488310345ea250ae138f24745b6769687afec363626		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA8A 14716 bytes
font_02_sfnt_off0000d85d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD85D 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.