Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfe780a91422b76…

MALICIOUS

PDF

51.3 KB Created: 2020-08-23 22:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fedf5faa8e1d91eae9159e136c5f759 SHA-1: 6d1f006f559545c680c4e73988b37fa5e41e03a3 SHA-256: 2bfe780a91422b760f580dfd39b240474950769b83021d39390479fd992ea425
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files, characteristic of a link farm. One of these links, https://ttraff.cc/pify?keyword=malayalam+album+songs+free++saleem+kodathoor, is identified as a malicious redirector. This suggests the document is part of a campaign to lure users to malicious sites, likely for phishing or distributing further malware. No scripts were extracted, and the document body is heavily obfuscated.

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=malayalam+album+songs+free++saleem+kodathoor In PDF document text
    • http://files.doodledogs.org/uploads/1/3/1/0/131070718/8640373.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/1/0432/5641/4363/files/68465105083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8697/1029/files/27231616589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/vasuxosawedef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5335/8999/files/90107160741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5335/0053/files/clowns_farting_in_the_basement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2076/0734/files/wiragusodolaxuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/five_feet_apart_movie_parent_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/2074/2819/files/warner_bros_abu_dhabi_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38659434623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1202/2691/files/bokuzaxenovebarekosuduzek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6139/5102/files/guvujexob.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: dgchallenges.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_off00007f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F09 5632 bytes
SHA-256: 7638bc655a2c43e1cf4b3814b66237d8f9814d15cf20542e5bf0d7cd6091a772
font_01_sfnt_off0000921a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x921A 14236 bytes
SHA-256: cf63e2cb217dc70f98df381b97bc743863a276d3b2d39cb8f68697acc24c46f5

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