Malicious PDF — malware analysis report

Static analysis result for SHA-256 645cec15676adc07…

MALICIOUS

PDF

78.7 KB Created: 2020-08-11 13:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f25ef80b85135b97b2366690416f944 SHA-1: 134757e0d89ceddcff0cf2ccb7f7ccd10e34f281 SHA-256: 645cec15676adc079ae7014178ef06d5a76aaf75905eddfe97c8c7ab126c99ee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate document downloads, but they lead to a redirector hosted at 'ttraff.cc'. This redirector is flagged as malicious and is likely part of a phishing or scam campaign. The presence of a large number of external PDF links suggests an attempt to manipulate search engine results or distribute malicious content.

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=biografia+allan+kardec+pdf In PDF document text
    • http://files.villamangocr.com/uploads/1/3/1/3/131384401/ripuf-sanepededabi.pdfIn PDF document text
    • http://files.moosethemorkie.com/uploads/1/3/0/8/130874328/433c685f1.pdfIn PDF document text
    • http://files.erinlands.com/uploads/1/3/1/4/131455158/4554022.pdfIn PDF document text
    • http://tilobe.saranacmountainhearth.com/uploads/1/3/2/6/132681231/84b2eda3b.pdfIn PDF document text
    • http://files.launasorensen.com/uploads/1/3/0/7/130739718/kelikota_tubowu_rumesefamewu_fifofomoxusenu.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/1/0429/8535/7463/files/medium_length_hairstyles_tumblr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/53960270930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3734/9272/files/journey_to_the_center_of_the_earth_full_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/journal_el_khabar_d_aujourd_hui_en_arabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/bozodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/wefulowupipixivopepobur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/16218948397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/38172356534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/ranger_boat_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demesudixagivok.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_off0000f995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF995 5256 bytes
SHA-256: 4d96399f11ff574496e88eec3f3fd6c45c609a318e49c5a35794f3db8b833e91
font_01_sfnt_off00010b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B82 10040 bytes
SHA-256: 14f6cd1ed3685d3c19efc3f3ea55eb166031922e9e532efa9baa0090a3dd3c1d

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