Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c7b0a2cafc63a1…

MALICIOUS

PDF

44.6 KB Created: 2020-08-07 14:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e95bf98a90afcbb005759efbd8cbfeb SHA-1: bb81dbb5fe1884e02ab423e726fd95eff3d25bb9 SHA-256: 66c7b0a2cafc63a13bf03c687fffbc00ad94ee852cee57c84ee60b9e2fb3edbb
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though partially obfuscated, includes the same malicious URL, suggesting a phishing or scam attempt to lure users to download further content. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=nhai+quality+assurance+manual+2020+pdf In PDF document text
    • http://files.shop.bushnvinefarm.com/uploads/1/3/1/0/131069812/9458d295b.pdfIn PDF document text
    • http://files.dancingvulturedesigns.com/uploads/1/3/1/4/131453124/zerusonopufexu.pdfIn PDF document text
    • http://files.whosyoko.com/uploads/1/3/2/6/132682934/4135261.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/brgeramt_berlin_anmeldung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/72964142455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/erupo_acneiforme_tratamento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/zonisukufatuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/zomimomesekilireto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/gajujubazewidina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1313/5774/files/lifimefaxaweliravozus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7698/3713/files/34187383531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7559/9524/files/43204029982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/halfhitch_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0115/9585/files/52905064758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9713/7056/files/33846622831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/55934028880.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6136 5640 bytes
SHA-256: 037348d00de86d60561dca873b97a489317e58838b07e5ad11b78ef065147ce6
font_01_sfnt_off00007436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7436 10244 bytes
SHA-256: 71143ccb07de718e8bdf13240cc8fd8703b45321bb148947c53dfef2f3107e5d
font_02_sfnt_off00009708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9708 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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