Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4591c57e19275e…

MALICIOUS

PDF

46.6 KB Created: 2020-08-18 22:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4734e1d3d157a630a658448595990a52 SHA-1: 00e5d5a8e3a84d480e628db1839ac131a761095d SHA-256: fe4591c57e19275ed7d05ede2edcf1e9b00944df4e79fe93b0eb77b368506a5c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=what+organisms+perform+photosynthesis+and+cellular+respiration, is likely used to redirect the user to further malicious content. The document body itself contains a question and references the PDF creation tool, suggesting a social engineering lure to encourage link clicks.

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=what+organisms+perform+photosynthesis+and+cellular+respiration In PDF document text
    • http://files.bellevueptsacouncil.com/uploads/1/3/0/7/130775677/rixarifizivemuva.pdfIn PDF document text
    • http://fikodu.burgesmustangfootball.com/uploads/1/3/1/6/131606490/lapofufana.pdfIn PDF document text
    • http://boboxumu.wakefieldstudentsupport.com/uploads/1/3/0/7/130775432/5002136.pdfIn PDF document text
    • http://vogif.clairehinchman.com/uploads/1/3/1/3/131380600/125feaa9434.pdfIn PDF document text
    • http://files.thefuninforever.com/uploads/1/3/2/7/132740327/2ef30d.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/1/0438/0046/1474/files/quimica_inorganica_catherine_housecroft_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89853177043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1280/0168/files/kimujowit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4680/5408/files/53037948399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/gemifarosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/brownlie_principles_of_public_international_law_james_crawford.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fokukivovasogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7441/1926/files/66016557049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/13549696753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/commercial_building_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1148/7397/files/john_deere_rx75_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7722 5684 bytes
SHA-256: 44defd57d536697624023dadcffe677a781ada653a3bba4495c68969c0f01830
font_01_sfnt_off00008a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A65 10148 bytes
SHA-256: 58595c50f326b2b301139ce88f70a093ef349876f95bce0a6138ff8ddddfbbe3

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