Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bec25a01066c099…

MALICIOUS

PDF

56.0 KB Created: 2020-08-21 20:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d02f6e76a3b87018e3264e21bddba3d SHA-1: 19e66c2b4780180c5d9e21d5babc1c1b6d52c8e3 SHA-256: 6bec25a01066c0992833800a0af63359722d0ff75a0eea931b98e1a04ce79535
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, suggesting a phishing or content-scraping lure. The embedded document body text, though corrupted, contains the URL 'https://ttraff.cc/pify?keyword=java+spring+framework+masterclass', indicating a social engineering attempt to trick users into clicking on a malicious link. 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.cc/pify?keyword=java+spring+framework+masterclass In PDF document text
    • http://files.holyfamilystowathletics.com/uploads/1/3/0/9/130969699/vojawawimalajoxomeko.pdfIn PDF document text
    • http://newog.ccmooresville.com/uploads/1/3/1/8/131871390/xezoroli-fomimagewaful.pdfIn PDF document text
    • http://files.sjvkailua.org/uploads/1/3/1/6/131606839/darupizetelaz.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/1/0433/0710/6462/files/78157051867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9930/8711/files/jivegarunovojiduzis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6874/9979/files/latest_telugu_dubbed_horror_movies_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7266/7296/files/nukax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8879/0179/files/zituzilexekokos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/12067887034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4666/5382/files/28953854958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9999/6569/files/fsmb_usmle_score_report.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 7

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_off000081de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 5328 bytes
SHA-256: f83fcc20fe986d8b1638100387845f230c2375548009cec4b2da3ed2608340cb
font_01_sfnt_off000093fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FD 15680 bytes
SHA-256: e15abebfff4395a7153ee7a7f7b7b0c53da7a7feab3ef692c94630e44cf30ffb
font_02_sfnt_off0000c4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4CF 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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