Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d51f1fd3a65d9bd…

MALICIOUS

PDF

40.4 KB Created: 2020-08-01 10:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52998d1263ca20a9eeb98fe9c7fbcc15 SHA-1: b7fd6c7553640a0a791195bcfd722fd0dc4ae6db SHA-256: 5d51f1fd3a65d9bdcd052415ede98c919c4c95e46557ee3f100ae062f234d8c0
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, specifically `https://ttraff.com/pify?keyword=latex+page+break`. This redirector is likely used to obscure the final destination, which could be a phishing page or a malware download. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to attract victims. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=latex+page+break In PDF document text
    • http://files.3feetforpete.org/uploads/1/3/2/6/132696030/feaea8.pdfIn PDF document text
    • http://files.hansingelangoe.com/uploads/1/3/1/6/131606758/9176443.pdfIn PDF document text
    • http://files.heartlandhospicemj.com/uploads/1/3/1/3/131383247/3054710.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/1/0429/9715/3943/files/tozowawuzokuriwabadiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/1543577333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/11367260204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/park_tool_big_blue_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/xuluzaloro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5820/0730/files/gojaguvusofofogijadidol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5729/1169/files/dakaxuzitovamadabixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7612/2792/files/xexolezoxasojosujinumevak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/gabulax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/ripigebozatolasuzedakikup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0917/files/3532089291.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 5

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_off000062b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 4988 bytes
SHA-256: 89cfd22168279cec630b265174561a27356a5d96d1e8b92a6196dfc2a62dc82b
font_01_sfnt_off000073ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CA 9876 bytes
SHA-256: 03fb31bdadc7aa2a6ede419893f7ee1bac9126378d9e5d58e2bc742af0be49e7

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