Malicious PDF — malware analysis report

Static analysis result for SHA-256 650c2d4edfa84886…

MALICIOUS

PDF

49.5 KB Created: 2020-08-04 21:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c648e01f90539ab3db40bbe6b93fa56 SHA-1: 29dbb09bb0419678bc8718c0b50911414f7f440e SHA-256: 650c2d4edfa84886c46fb588d878d6b2498864a5a7574af4976710fc6a75d5fd
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate documents, but they redirect to a malicious domain identified as a redirector. The ML classifier strongly indicated maliciousness, and the heuristics confirm the presence of a link farm and a malicious redirector. The embedded content, though obfuscated, contains the malicious URL, suggesting an attempt to trick users into downloading further content.

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=gre+analytical+writing+argument+topics+pdf In PDF document text
    • http://files.magafricangoods.com/uploads/1/3/0/9/130970003/woxonus_siroxujo.pdfIn PDF document text
    • http://files.matthewmiles.co/uploads/1/3/1/6/131606366/vigofitup.pdfIn PDF document text
    • http://files.simongibney.com/uploads/1/3/1/4/131452883/dukurosewifeni_rikuvojofegun_dejifamaxogal_dafutolozenexa.pdfIn PDF document text
    • http://files.seetheworld.tours/uploads/1/3/2/8/132815961/bawifutopite.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/1/0431/4637/9426/files/29263335868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4066/8838/files/38452575556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/jovoleda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/guxufafefipogij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/17874929030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2353/0141/files/kupenoxosipitebaveruved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/duvawufuzolumezono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0490/2045/files/24463273585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1326/files/85471861493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/26197241045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/sufijavutevesunade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/pobomizufafiravumuzudemo.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_off0000822d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822D 5700 bytes
SHA-256: 0b34fbb773887d2a8bfd1f2e8869db8bc2e40f42bb368e8dcfa83928dd07a09f
font_01_sfnt_off000095a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A1 10240 bytes
SHA-256: 6af754e1aef244f804cd5dfe8c8c6050d092f5ca68570a0b8e16756c0aee5b6e

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