Malicious PDF — malware analysis report

Static analysis result for SHA-256 de49c31d2bb5c73b…

MALICIOUS

PDF

51.0 KB Created: 2020-10-11 10:26:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: a99ac9fc4cc0edee4f1485bf43c9c828 SHA-1: bc82f6e4fcdb6ec0169d897532ff289e0752f7af SHA-256: de49c31d2bb5c73b6a16ebdb747111a2b25464f4fd9ec00fed0c2a4ec16a1f54
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a known malicious redirector. The document body and embedded links suggest a lure for free items or content, likely leading to phishing or malware. The presence of a password archive lure further supports a malicious intent to trick users into a multi-stage download or credential theft process.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=aurora+terraria+ip In PDF document text
    • http://files.gehs-boosterclub.com/uploads/1/3/0/7/130739831/gemerozupanize.pdfIn PDF document text
    • http://files.lucialightexperience.com/uploads/1/3/1/4/131453950/b9e50d3.pdfIn PDF document text
    • http://files.911bodyresq.com/uploads/1/3/0/7/130776118/natarudul-wasawebi-pifag-nisaneneduk.pdfIn PDF document text
    • https://site-1044503.mozfiles.com/files/1044503/bisogemexubodakazamitisos.pdfIn PDF document text
    • https://site-1040134.mozfiles.com/files/1040134/85071553344.pdfIn PDF document text
    • https://site-1039578.mozfiles.com/files/1039578/38309395672.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000084d6.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000084d6.bin)
    • https://cdn.shopify.com/s/files/1/0266/8530/9103/files/toolkit_for_fb_by_plugex_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5715/files/42680319863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/american_pie_chords_ukulele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5295/7335/files/minion_rush_apk_download_ios.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 extracted file (font_00_sfnt_off000084d6.bin)

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_off000084d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D6 4592 bytes
SHA-256: 75f41287b04e380bb9f260c97c56be6e05bfc6d62d138a0338cf0d0a8d8c1561
font_01_sfnt_off00009485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9485 13492 bytes
SHA-256: 035bde28d73455343de1eeb03b53c18f1de89e14023b4787e6c90ab5a074e878

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