Malicious PDF — malware analysis report

Static analysis result for SHA-256 40ad967730a38a22…

MALICIOUS

PDF

40.1 KB Created: 2020-08-14 19:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 398fee265e630e134e9a7a80730b3140 SHA-1: 3a99f349919daef4801b7570fefdc9eebccd1a66 SHA-256: 40ad967730a38a22b0b4237b6c7bd04e0d674c19d36aee256dcfd5342285f2e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, it contains a mass of external links, many hosted on Shopify, suggesting a link farm designed to obscure malicious destinations. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious 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.cc/pify?keyword=abhay+film+video+songs In PDF document text
    • http://files.chroniclesofdestiny.com/uploads/1/3/0/8/130813643/0c69dc128b9c63e.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/1/0430/9558/9013/files/80677003973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0933/4683/files/automatic_door_opening_and_closing_system_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/bluetooth_headset_huawei_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8887/9521/files/ball_mill_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/wexumilurapanagira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/90551599561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/lirig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/govalifogumolixatapeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/swimming_pool_construction_details_dwg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8398/7096/files/xajixuf.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: chroniclesofdestiny.com 3 samples

Related samples 2

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_off00005235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5235 5516 bytes
SHA-256: 4dc178fa90bee90adb509492fed60a3a513e31b133fb539e7c4b9a99e5bccd25
font_01_sfnt_off000064e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 15200 bytes
SHA-256: 4c668cefaf8185a1f0bcc6c7d099cfc8dadfeacd6ebd3eb33d1d14a03996a06d

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