Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1c5cbde00598ba…

MALICIOUS

PDF

39.4 KB Created: 2020-08-07 05:50:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78a5cf1b3e867a7a195d59fbc7ca9e6e SHA-1: e52c647976048206b0ae42339b75167f55b6905f SHA-256: 2f1c5cbde00598bac06a4823e3e86fd7469a1be34723904902fee0f3166eeea1
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The primary malicious URL identified is https://ttraff.com/wb?keyword=herramientas%20manuales%20y%20de%20poder%20pdf. The document body, though partially corrupted, also contains this URL and other benign-looking Shopify URLs, likely as part of the link farm.

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/wb?keyword=herramientas%20manuales%20y%20de%20poder%20pdf In PDF document text
    • http://fusedifa.courtneyhalereviamusic.com/uploads/1/3/1/4/131453674/pinenubuwowuton.pdfIn PDF document text
    • http://files.tsdistributing.com/uploads/1/3/1/3/131383204/7115774.pdfIn PDF document text
    • http://files.friscoterracepoa.com/uploads/1/3/1/4/131438639/6019449.pdfIn PDF document text
    • http://xexow.mrtaylorsmaths.com/uploads/1/3/1/4/131406893/sazevifozazopuk.pdfIn PDF document text
    • http://files.auswingeorgethomas.com/uploads/1/3/1/4/131453213/7ecc0f2877b9.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/1/0433/5563/5880/files/how_to_unfollow_everyone_on_twitter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/90762337277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/zimazuvovepekajuneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/troybuilt_5550_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/play_music_in_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1645/2258/files/49144046928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4755/9066/files/pdf_to_word_converter_mac_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/3115201499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6925/1492/files/36904843933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4163/5997/files/16871028603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706In 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_off00005c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5C 5248 bytes
SHA-256: 3026f7b285fd1d8609ec292ef8927b388a94b35545ce17036e8d72b3dbfe2ab6
font_01_sfnt_off00006e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 9992 bytes
SHA-256: 1892384306cf96b75e0b5983b5fec6cf30fda1358a90bc4ec30d098680091e9c

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