Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a323d1cd085a75c…

MALICIOUS

PDF

45.0 KB Created: 2020-08-04 22:43:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ece291b7165988e1cf480343bdc0d899 SHA-1: 3e9e46d6aa51113078c63d403b9d86cbd8781d31 SHA-256: 1a323d1cd085a75c8497b2179f8833ca8cec2de553c1ae9cba87a476532d76ba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to malicious infrastructure, disguised as a free book download. The ML classifier strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is designed to lead users to further 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.cc/pify?keyword=analytical+reasoning+book+pdf+free+download In PDF document text
    • http://files.marschnereyemd.com/uploads/1/3/2/3/132302871/kefefowuxi.pdfIn PDF document text
    • http://files.intuitivepetcare.com/uploads/1/3/0/8/130814032/purusawolalon.pdfIn PDF document text
    • http://files.myforgenetwork.com/uploads/1/3/2/6/132695388/mivonupojoxu_dazudizopisip_jofanuramap_tinesesapa.pdfIn PDF document text
    • http://files.85groupphotography.org/uploads/1/3/1/4/131483009/wudanomuwab.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/1/0428/9835/8432/files/67142307476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7281/4245/files/totekedifitube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/78523746225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8170/9206/files/pobejoloxomiwugotulon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/76081788298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/webugekev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4253/5581/files/40967732319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/84608279789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3330/3976/files/zexedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/78969272093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/bazitozeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/91830118049.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_off000057ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57ED 5708 bytes
SHA-256: 014d30f06d328f89773b6a3438a4a7bc42bfc69d121e77c382f7d0ed0b99ec85
font_01_sfnt_off00006b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B81 2116 bytes
SHA-256: 2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30
font_02_sfnt_off0000754d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754D 15372 bytes
SHA-256: 42053891818d0e53e52ee4a31877815ecec1cc34a24e62e39b74efcaa02da922

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