Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bca6ecb0c17730a…

MALICIOUS

PDF

61.2 KB Created: 2020-08-17 07:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee6d4d55fed8760b7a83f7971ea92d62 SHA-1: c0be12bb1d1e796a49f8e7fe1924f6e9a1cf71a7 SHA-256: 7bca6ecb0c17730a98acc2cd60623123cd0ce164a6d62bc481b9393b99a78375
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=berserk+opening+2016`. This suggests the document is designed to lead users to malicious sites, potentially for phishing or malware delivery. 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=berserk+opening+2016 In PDF document text
    • http://files.magiqatlas.com/uploads/1/3/0/8/130814513/zivatemurijupizowigi.pdfIn PDF document text
    • http://lizisaj.adriennebrewington.com/uploads/1/3/2/7/132712336/jozenez.pdfIn PDF document text
    • http://files.sambaedmonton.ca/uploads/1/3/1/4/131408465/nejokisinemex_jigot_totanuraresetef.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/1/0435/5158/8507/files/406745714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6266/files/marlin_336_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5010/4982/files/da_form_1687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/xonibekaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1460/1378/files/gezixazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/83184508191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/43765806942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/wofobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/86138152514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8104/0033/files/midatafivelukesolojowotod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDB 25996 bytes
SHA-256: 24497a9fff878ae35ce9495520baac45ac5704388018ff02fbf53279bc270af7
font_01_sfnt_off0000b1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1BC 5336 bytes
SHA-256: a437f7fc25277f1a820ac1b52839034eaa9e67e881312381ba26063172551e4f
font_02_sfnt_off0000c40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC40F 10112 bytes
SHA-256: 6d6853ec3a88432682fc5516e5da97264db1242cf3907ae4d2f91b4d2c71af16

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