Malicious PDF — malware analysis report

Static analysis result for SHA-256 19371a8814b7c962…

MALICIOUS

PDF

37.6 KB Created: 2020-08-25 01:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f05c557998eeb2a027b04ff623af2f7e SHA-1: fe1718ea7ee12850461e81afaa3bc677b21dd0da SHA-256: 19371a8814b7c9628ac619c0c2fd51337c1c6103b87d8799cca4b9298dd2ecbc
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though partially corrupted, suggests a lure related to a 'development program PDF'. The embedded URLs are likely part of an SEO link farm designed to attract clicks, ultimately leading to the malicious redirector. No scripts were extracted, but the primary attack vector is the malicious link.

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=birle%25C5%259Fmi%25C5%259F+milletler+kalk%25C4%25B1nma+program%25C4%25B1+pdf In PDF document text
    • http://jafinit.buttonwoodheights.com/uploads/1/3/0/7/130776659/zaropatel_liwakil_mivavez_sopevimit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/97742344855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/24439390827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/2021307870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/jufowalerejajapene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/sibisibutovobunikimum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72438278193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/segefegijekubefotuvazok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/79932252208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/call_of_duty_ghosts_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/54450933987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8581/4173/files/bilingual_approaches_to_language_learning.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: buttonwoodheights.com 3 samples

Related samples 1

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_off0000449e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x449E 5364 bytes
SHA-256: 60f9da088f53875bacf2dc34bf075eb2ef907bbdef036179db4f9107d3c4ee85
font_01_sfnt_off000056bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56BD 11092 bytes
SHA-256: 9688cd6ebfa3749c7a85e8cdf864dc550020f1c8e6fea6921a137bd2386efdf8
font_02_sfnt_off00007969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7969 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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