Malicious PDF — malware analysis report

Static analysis result for SHA-256 7858ec13683c6f30…

MALICIOUS

PDF

39.9 KB Created: 2020-08-22 00:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a31ffc123a7499a41b6fc4254b3b83a3 SHA-1: 9b911bbd05eb77751c38533a0ded64bb16a67744 SHA-256: 7858ec13683c6f3068a0d875bf0dd91918fed762cc48c78d5185303accabc19e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to redirectors, with the primary lure being a promise of a 'full movie dual audio' download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms that at least one of these links leads to known malicious infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the structure and embedded links suggest a phishing or malware distribution attempt.

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=anonymous+full+movie++dual+audio In PDF document text
    • http://buzan.mimiandhillshop.com/uploads/1/3/1/4/131453109/bafebepum-lisukepufakid-rinid.pdfIn PDF document text
    • http://files.architecture3115.com/uploads/1/3/2/8/132815791/turalazewuva-jijutiwadivipe-bezifuno-sugilipakup.pdfIn PDF document text
    • http://xutij.secureallianceps.com/uploads/1/3/1/1/131164406/72d8d691.pdfIn PDF document text
    • http://wexoka.arkansascloggingcouncil.com/uploads/1/3/0/7/130776819/kezademex-wikuwiri.pdfIn PDF document text
    • http://files.bchilinbeauty.com/uploads/1/3/1/0/131070872/2b3a2528c5cbc90.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/1/0432/7797/5717/files/41612069241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/0588/7900/files/75916796476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4344/5141/files/fatimugorabojogaxijogup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1206/7228/files/potica_aristteles_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7763/1126/files/supuninofodofifasubeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1949/3785/files/software_video_facebook_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9503/9905/files/ltaaxtyrb_2_ctpjy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0862/0701/files/nojaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/black_and_decker_cordless_sheet_sander.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/company_capital_structure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6687/4266/files/67731484524.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 5

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_off00005f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F00 5108 bytes
SHA-256: 3efe7f381e2ce89472c8f9b4e3e849388713097bf5b9432d489a0b0ec39db660
font_01_sfnt_off0000705d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705D 10024 bytes
SHA-256: 90fad65e502815d3663a3a9dead20b3bf66b76b9ade83f13689079bbfd6fec77

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