Malicious PDF — malware analysis report

Static analysis result for SHA-256 41baa49389486c1a…

MALICIOUS

PDF

60.5 KB Created: 2020-08-17 07:23:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb42d605e83e8d47e21163a1304b4d13 SHA-1: 25f10141c323285dec4bf0eff97fdacae6953ce2 SHA-256: 41baa49389486c1a626a91514211d871e4e2e2269da2632d5354019ef5a72e4c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, characteristic of a link farm. One of these links, https://ttraff.com/pify?keyword=isoflavonas+de+soja+menopausia+pdf, is identified as a known malicious redirector. The presence of this redirector suggests the document is intended to lure users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, and the document body was 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.com/pify?keyword=isoflavonas+de+soja+menopausia+pdf In PDF document text
    • http://files.smallsmusiclab.org/uploads/1/3/0/7/130738562/tekipolorurogozegax.pdfIn PDF document text
    • http://files.maynardsdoco.com/uploads/1/3/0/7/130739835/fuxilow-zijidukuzar.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/1/0431/1141/5962/files/77671913734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/58213377664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/9298959839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/23025931135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/punjabi_remix_songs_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7585/7571/files/peturumefasegif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5890/5759/files/57190442095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/american_gods_season_2_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/html_to_jquery_plugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/gulosexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6465/6026/files/91873721495.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96D9 5164 bytes
SHA-256: 6916d3d22b65257b0960f1a40b9502d86f77ea48c462508643f97f240fe7f96f
font_01_sfnt_off0000a865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA865 11744 bytes
SHA-256: 52242a6c5f3be141a889ca95d7789f85385869a36b1957dcdd3e945e9c8db8fb
font_02_sfnt_off0000ce3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3E 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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