Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc7cba45262ed84…

MALICIOUS

PDF

37.9 KB Created: 2020-08-09 07:05:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a11dcc1cedadd639286fe581090c0ae SHA-1: add5e275eeb72720ec9504fe734cb53deb2e80c2 SHA-256: 7bc7cba45262ed846c997c14260374fd32bcd344e11a147755976f337fd1e689
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious infrastructure. The primary redirector URL is 'https://ttraff.ru/pify?keyword=aula+internacional+1+nueva+edici%25C3%25B3n+pdf', which is flagged as malicious. This suggests a phishing or scam attempt using a link farm to 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.ru/pify?keyword=aula+internacional+1+nueva+edici%25C3%25B3n+pdf In PDF document text
    • http://files.pluckersworld.com/uploads/1/3/2/8/132814096/tilemozu.pdfIn PDF document text
    • http://zidadof.balihoteltransfers.com/uploads/1/3/2/7/132740214/mixolovometis.pdfIn PDF document text
    • http://files.dogsbestfriendcr.com/uploads/1/3/1/4/131454102/7951001.pdfIn PDF document text
    • http://files.fullvase.com/uploads/1/3/0/7/130776499/86196f.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/1/0431/6427/0743/files/lawumuvaguxijuvagedetag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/yardi_voyager_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/tabaliwakudinugevazevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/61392433591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/23540815604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/jofafugadege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/vubetominuzobosuguxuxetam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1130/8696/files/8027646431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6343/5679/files/12343915556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3888/3485/files/mejuzupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/angulos_en_la_circunferencia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/dipetuj.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 3

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_off000047de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47DE 5088 bytes
SHA-256: cd38f85c88e7a8a9d710b292ae8d12af90d3b01df4df78c57f97f31467d206dd
font_01_sfnt_off000058fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FE 10160 bytes
SHA-256: 188cb48f2e1c302063c2b31a569b589e5dd1b64605c3428d08c6bbd35cc1fada
font_02_sfnt_off00007a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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