Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd4d320a5fd24fc…

MALICIOUS

PDF

42.0 KB Created: 2020-08-20 06:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88ccd338053d33251e3c0e35637fb3f5 SHA-1: 7c717b4de57690b8f56bd721699614336e810494 SHA-256: cfd4d320a5fd24fc36180f17a49b196209d305209a56342e8bff8ebd76a96ab4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=iim+kozhikode+placement+report+2015'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links, including one to a Shopify domain that hosts another PDF. The primary malicious link likely leads to further malicious content or malware download.

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=iim+kozhikode+placement+report+2015 In PDF document text
    • http://files.suzannequigleycopywriter.com/uploads/1/3/0/7/130776745/8400120.pdfIn PDF document text
    • http://files.chrissiddallmusic.com/uploads/1/3/1/6/131637853/betitemeziwidusesap.pdfIn PDF document text
    • http://vidomaz.saanicharmycadets.ca/uploads/1/3/2/3/132303079/f171440.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/1/0432/3305/0779/files/dugitaxapelorit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/kobonoraj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0448/6055/files/faithful_victory_worship_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23631451812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/xodafawewogoxuxolavimira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/pygame_python_3._5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/starting_out_with_java_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/jamugivefumomumudupoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2185/8973/files/potitabezatimukoxapej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/lajisaxusomozigamanaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/91730448205.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 3

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_off00006531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6531 5636 bytes
SHA-256: 6f736543b4cd2f71afb552bfbb2bfabc953ac9df43d8eadb184c4d5d2710587f
font_01_sfnt_off0000783d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783D 10208 bytes
SHA-256: 56ebbf392a76a7e1be365e307b725c40703406f223b9dc6429a9a42d4c848744

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