Malicious PDF — malware analysis report

Static analysis result for SHA-256 17f3e04a81843995…

MALICIOUS

PDF

74.6 KB Created: 2020-07-31 07:30:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b43b98447d98c15495a53fe09d7a5768 SHA-1: 90ff176be0c2f1edf5aa3c71c90622f1c0c5e50d SHA-256: 17f3e04a81843995491b14a8dd92aa288d3f6fef5ef54bab5b51a3d87bed1fa2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, appears to be a lure for a calculus textbook solutions PDF. The primary malicious URL, 'https://ttraff.ru/pify?keyword=calculus+and+its+applications+13th+edition+solutions+pdf', is flagged as a malicious redirector, indicating a phishing or malware distribution attempt.

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=calculus+and+its+applications+13th+edition+solutions+pdf In PDF document text
    • http://files.marsal-solutions.com/uploads/1/3/1/3/131379946/kinofowazavuwaropi.pdfIn PDF document text
    • http://files.draytonparish.org/uploads/1/3/1/0/131070618/numagofalasumuv.pdfIn PDF document text
    • http://files.iyengaryogacenter.com/uploads/1/3/1/6/131636990/c4288220374795.pdfIn PDF document text
    • http://files.hemlockcompany.com/uploads/1/3/1/4/131482808/sugixiwafogebi_najiluret_tasotolo_liwirotawijug.pdfIn PDF document text
    • http://files.vandenbel.com/uploads/1/3/1/4/131406222/8212891.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/1/0434/0131/4456/files/69052868208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wozofedotomutigetipire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8130/0123/files/kisozerador.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4026/0775/files/zuzobutesesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4167/5685/files/76264868996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7875/4199/files/majifuberixotex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/kubogiroxezusurotinok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7805/0201/files/61798498026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/romikapitiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/peneti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3377/8597/files/zipibegefimewaxobebopeguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1596/1762/files/68721310406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/97382721618.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DA 5268 bytes
SHA-256: f491981503280ee4a3f6097af808a5180d94f08b271a52767f41aef954a345a6
font_01_sfnt_off0000e7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C4 16500 bytes
SHA-256: 487dcb03c7bfbd596987b517e7a8fb2d06e025437d3f60d189adc726a8d824f3

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