Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc83d0d9c426c2b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-12 11:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2fbe9bd18b10b76bfc56055015593a46 SHA-1: 66c89d080da4b07513a031a773c15da7c024e2c4 SHA-256: 5fc83d0d9c426c2bca246ec2342a6b2842e8e8c663c58527ec23f86c7855ae92
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirectors and potentially malicious domains, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, contains a URL that aligns with the observed malicious link patterns. The primary intent appears to be directing users to external, potentially harmful websites, possibly for phishing or malware distribution.

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=jurnal+alley+cropping+pdf In PDF document text
    • http://numaseti.ljhfoc.com/uploads/1/3/1/3/131383791/nowipurusamoje.pdfIn PDF document text
    • http://files.aspartika.com/uploads/1/3/1/6/131606289/papakegimax-sivob-vamutibema-zuwila.pdfIn PDF document text
    • http://files.geraldsandau-sculpture.com/uploads/1/3/1/4/131410158/e0c4b0350.pdfIn PDF document text
    • http://files.youngoakmorgan.com/uploads/1/3/2/6/132683088/4197937.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/1/0433/0687/7080/files/29025511016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/2987/7151/files/fur_elise_ukulele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/mazilamirazamipurotuvux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5922/4480/files/92969527978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7896/6686/files/didumazelirezekuzafige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/wimed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/bash_try_catch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/wobipuzenagutuwepof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2106/5640/files/fantastic_voyage_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9915/2799/files/zovukis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/foguzus.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 7

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_off0000656e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656E 5236 bytes
SHA-256: fbd20cb89857958801cd525479e804cf89450592d4dcb81c9f2b25d5a8346948
font_01_sfnt_off00007752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7752 11484 bytes
SHA-256: 5f8e257ba4d7ad402756ed67c0525e34179692490060a5d83d24f5c2a55ce5a8

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