Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c040b2084aa62a…

MALICIOUS

PDF

37.1 KB Created: 2020-08-26 06:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6d1f321cd7fb76cfc7c82f1034748e9 SHA-1: f479b8d2fea329726cd738331be382e0475ed375 SHA-256: 80c040b2084aa62a75ff697fdc4c95ac5653eff611f2d63c7134696447d030ee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious URL, identified as a redirector for SEO link farms. The document body, though heavily obfuscated, contains a reference to the malicious URL. The ML classifier strongly indicates maliciousness, and the heuristics point to a phishing lure for free downloads.

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=the+calculus+7+leithold+national+boo In PDF document text
    • http://files.alaskadalmatians.net/uploads/1/3/0/9/130970003/8975480.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/1/0464/9884/0744/files/56496637949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/jebilepaxub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/42651288670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4448/6811/files/69434191399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5720/8731/files/563636270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/83145966739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/21585595809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3697/8850/files/healing_back_pain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9565/4554/files/dutejokuwiditazajefine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/arihant_analytical_logical_reasoning_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/zubuwolesozupu.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
🗂 Part of campaign: f-static.net 7 samples

Related samples 7

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_off00004be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE4 5100 bytes
SHA-256: e49b7de6156bdbba4e03be15e22d5a50539ace8fefbd175a346ce8ef36b854ca
font_01_sfnt_off00005d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2A 1796 bytes
SHA-256: f2fd644e4456c386070f09a2777277c31662a4a00a06e6a83a863dc8a0122cd5
font_02_sfnt_off000065fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FA 9752 bytes
SHA-256: 1e0fe19eafb2024f45869ba256899a972f507b8ff2fd79f1de9975c8bdff9cc2

Open this report in the interactive analyzer, or submit your own file for analysis.