Malicious PDF — malware analysis report

Static analysis result for SHA-256 66667e525d8c79fa…

MALICIOUS

PDF

39.5 KB Created: 2020-08-27 23:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef957e9eb889a379811f7cf11a8ed72f SHA-1: 587eeef8be25d4fa45b682856bcf326994333ced SHA-256: 66667e525d8c79fafbe70056aaba5086258970eb96f88e8271e7d6b21cf67229
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though partially corrupted, suggests a lure related to a 'Boyds bears price guide'. The presence of a malicious redirector link indicates an attempt to lead the user to a malicious site, likely for phishing or malware delivery. No scripts were extracted from this sample.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=boyds+bears+price+guide In PDF document text
    • http://files.nationalscientific.co.uk/uploads/1/3/0/8/130874588/02e28043e3.pdfIn PDF document text
    • http://files.fredsgaard-classic.com/uploads/1/3/0/7/130738822/witexixa.pdfIn PDF document text
    • http://files.eldertwopotato.com/uploads/1/3/0/8/130815017/3802946.pdfIn PDF document text
    • http://sabijafi.alittlepeaceayurveda.com/uploads/1/3/0/7/130775388/4741573.pdfIn PDF document text
    • http://files.kathrynrobertson.co.nz/uploads/1/3/1/4/131453651/1049ac4a99a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/faithless_drifting_away_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3296/1443/files/68256262216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0922/6398/files/sekesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/13086693785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/6297/7689/files/thor_ragnarok_streaming_vostfr_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0819/6767/files/93410401740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/super_boot_manager_ubuntu_18._04.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9109/9805/files/41524352667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9075/6259/files/gopefadakisowigobepave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/pdf_to_word_online_100_free_convertertoword._online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/lipid_profile_chart.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD0 5500 bytes
SHA-256: a051af2bf34270cc6fac0401ee7a45b21ccd926c6d2990101749a57fabcc7533
font_01_sfnt_off00006f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F93 9840 bytes
SHA-256: cad643966468357e4be8f59759871293eb082709e535d1eabe931902ec11bde1

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