Malicious PDF — malware analysis report

Static analysis result for SHA-256 e783a42547564ee9…

MALICIOUS

PDF

50.5 KB Created: 2020-08-07 09:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f2ca65d4051d3cc2cd1ec8cdb20c095 SHA-1: 8fc2b21503dd42e2e32771af11cdeeda47e6cc78 SHA-256: e783a42547564ee9cdc4328eb455fa9a8fd8530b45c5b8a8f9e2ce9da704a3fc
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'introduction to public finance textbook pdf' and a URL that appears to be part of a link farm designed to attract search engine traffic. This suggests a social engineering lure to drive users to malicious sites.

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.com/pify?keyword=introduction+to+public+finance+textbook+pdf In PDF document text
    • http://wufojit.georgerichards.net/uploads/1/3/1/6/131637881/e22c92d.pdfIn PDF document text
    • http://files.gvstclub.com/uploads/1/3/1/8/131871864/mazisesat-koturekasas-kuvalusexitoro-tesutewage.pdfIn PDF document text
    • http://files.lisaspykers.com/uploads/1/3/0/7/130775033/d555a.pdfIn PDF document text
    • http://files.nashvilleperformancepsych.net/uploads/1/3/2/6/132695644/xinivitidilunepososu.pdfIn PDF document text
    • http://files.wendyrobinsonwow.com/uploads/1/3/0/7/130776791/fdb8abea7bd6626.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/1/0433/5838/8392/files/10121681859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/voforafok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/34048005765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/26243770266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/togilubirojabuberip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/84580210116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/77444895620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0636/9703/files/ama_road_rport.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/kovizex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7066/0508/files/mikilaxobuxexelumujilume.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 6

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_off00008958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8958 5180 bytes
SHA-256: c7ddeb4446a234903da9097beb75dc862a65b8e67104965d16236fb7bc850eba
font_01_sfnt_off00009b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B05 10032 bytes
SHA-256: ad92a7c3d857be8d6a21fbc720c70b23a2478d4dca24c113f9513e9457aa934e

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