Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1d693c649cf7b0…

MALICIOUS

PDF

246.4 KB Created: 2020-08-05 03:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cd4370942d7e4c20a4d192edf6ff585 SHA-1: ac27f3427253685b3d4056b594f25ea53015d1c5 SHA-256: 6c1d693c649cf7b0d4deaa5b15d0a030e70330c438a953a791fa83088afb01ab
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a link disguised as a download for a 'cadastral survey book pdf' which redirects to a malicious URL. Heuristics indicate this is a social-engineering lure to trick users into installing a browser extension or update, a common tactic for credential theft or malware delivery. The ML classifier strongly flags this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=cadastral+survey+book+pdf In PDF document text
    • http://files.pst4y.org/uploads/1/3/0/7/130738814/piwagitasesesuwatug.pdfIn PDF document text
    • http://files.instituteforlgbthealth.org/uploads/1/3/1/0/131071056/zanotikisipediw-zexugesazudix-vafigapijuman.pdfIn PDF document text
    • http://noxasab.krisandandreawedding.com/uploads/1/3/2/7/132740930/moramal-kidopodilabapof-rapujamexekafi-bazaxezewonu.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/1/0433/6667/8686/files/bewimavewuvukegowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4803/2666/files/lexam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/toyota_aqua_2020_manual_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/widaximefakoguzosafelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/2235281569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/setup_homepage_in_firefox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/compendium_of_the_emerald_tablets_billy_carson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6503/3383/files/xotikatofanokakikol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1569/1678/files/18843296274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/jidujetetimuziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/puduvipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7335/5424/files/zonodenufikobu.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_off00038993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38993 5308 bytes
SHA-256: 7f460b6a5b1580262dec1292c319b0c9bf8cf2c2352cbfc33fbd92003cf2c520
font_01_sfnt_off00039bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39BB4 15120 bytes
SHA-256: ea4ef5c38e5b2cefb93e917a4a3c23a898f29c0699a78ab74d0187b707f932d1

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