Malicious PDF — malware analysis report

Static analysis result for SHA-256 a75aad8825d788a2…

MALICIOUS

PDF

42.3 KB Created: 2020-08-11 00:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b73a201123cf319c332aec408125b4e SHA-1: 9ebbe43b9211ae5116de4c3d1490db73f4217bc1 SHA-256: a75aad8825d788a21d24e3e767347f2249071599604b9cafc99a16c7391a25d9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many pointing to potentially malicious redirectors or SEO-poisoned content. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL identified is https://ttraff.cc/pify?keyword=orcad+schematic+capture+tutorial+pdf, which is likely used to redirect users to further malicious sites. The document body, though heavily corrupted, contains references to the lure 'orcad schematic capture tutorial pdf'.

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=orcad+schematic+capture+tutorial+pdf In PDF document text
    • http://milij.lovewithjessica.com/uploads/1/3/1/4/131406893/vudagojobalilanumavo.pdfIn PDF document text
    • http://files.saintgregorysileby.org/uploads/1/3/2/7/132741110/ba65abaf9e21.pdfIn PDF document text
    • http://files.duneridersponyclub.org/uploads/1/3/0/7/130740572/zutebipalate.pdfIn PDF document text
    • http://files.faysoriginals.net/uploads/1/3/0/7/130739892/8107329.pdfIn PDF document text
    • http://files.confessionsofanerd.com/uploads/1/3/1/3/131383657/tiwuva.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/1/0431/2947/1130/files/47652360232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57896919986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/aquaculture_telugu_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5517/7109/files/mkv_to_mp3_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/pixadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/15147233248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/65750828375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7074967355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/4553789126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/dolphins_screen_savers.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 4

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_off0000680f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680F 5424 bytes
SHA-256: c8be378d9f7484b4ec961ac2acf578c7704742f6f214307fa7aaf73ae604578a
font_01_sfnt_off00007a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5B 10068 bytes
SHA-256: db936c59ac883dbad243da8d7931505d4cdadf28c246df7c402820eb82b9a732

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