Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eafd08c233f8f43…

MALICIOUS

PDF

57.6 KB Created: 2020-08-17 09:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a160589ed4763a1aa270a15a491cab83 SHA-1: 95bf51368d43701197b6609b3e24945cca26a686 SHA-256: 6eafd08c233f8f43286c4a9f30ebecd8d4d4f022c6448881a6676be92dfeaa1a
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, contains references to URLs that are part of a link farm, suggesting a tactic to manipulate search engine results or distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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=warhound+titan+datasheet+pdf
    • http://files.ourfamilyhistory1.com/uploads/1/3/1/4/131406885/6e4151.pdf
    • http://files.readingsbytara.com/uploads/1/3/1/6/131607866/vuvenonimukoko.pdf
    • http://files.jennmconway.com/uploads/1/3/0/7/130775551/vazojin.pdf
    • http://kodab.jar-group.co.uk/uploads/1/3/0/9/130969465/1319020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2634/1272/files/starting_an_airline_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5993/files/les_types_de_centrales_lectriques.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/labeluwoze.pdf
    • https://cdn.shopify.com/s/files/1/0431/3779/4204/files/acs_general_chemistry_exam.pdf
    • https://cdn.shopify.com/s/files/1/0450/8424/6168/files/pisanijudazosuwoza.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/6258930057.pdf
    • https://cdn.shopify.com/s/files/1/0437/7778/6018/files/98479883176.pdf
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/sujijugejifu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/dalok.pdf
    • https://cdn.shopify.com/s/files/1/0437/8732/1505/files/ahiravan_vadh_video_3gp.pdf
    • https://cdn.shopify.com/s/files/1/0430/8366/1461/files/xaxofitesavevozikefi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/las_ciencias_naturales.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/sejuzipifinodapikegupof.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_off0000a522.bin
f786a4a6af83cc2dd8957194be315e223ca72e3251164048b934dde14fb7c0b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA522 5108 bytes
font_01_sfnt_off0000b68c.bin
be7ec5739fe2a9ca5ca8774fef70a7de082ac25a68eeb113bf5bbbba957625b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB68C 10180 bytes

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