Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee2cbfaa8780f88…

MALICIOUS

PDF

40.3 KB Created: 2020-08-09 11:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17b89a7844f54f83c320f91d2c376f24 SHA-1: 440e693aaa708324f95ad0e42d0087f94e21a7c8 SHA-256: 3ee2cbfaa8780f881aad065ff0c0a5266397b2caa67125575c0e648468efd1b4
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, many of which point to a redirector service. The ML classifier strongly indicates maliciousness. The primary malicious URL identified is https://ttraff.cc/pify?keyword=auditoria+informatica+gonzalo+alonso+rivas+pdf, which is likely used to redirect users to further malicious content. The document body itself is heavily obfuscated but contains references to the malicious URLs.

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=auditoria+informatica+gonzalo+alonso+rivas+pdf In PDF document text
    • http://files.utahproaudio.com/uploads/1/3/1/6/131607232/8367714.pdfIn PDF document text
    • http://files.yoonjungkang.com/uploads/1/3/1/4/131438177/favupid.pdfIn PDF document text
    • http://loxiv.campwannacombac.com/uploads/1/3/1/4/131406717/1409445.pdfIn PDF document text
    • http://files.concordstorefixturegroup.com/uploads/1/3/2/6/132682684/zonudasenazako_zexukepuwuwide.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/1/0445/8423/9268/files/comment_attirer_la_chance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7113/4106/files/spiritual_leadership_j_oswald_sanders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/54306318844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/bobrick_b_2111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65028435792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/6475/7146/files/accidente_de_trabajo_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3831/8487/files/26639553449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8532/3683/files/xakizefepiwadejigamaremep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6698/1542/files/gotagisevanilogegu.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 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_off00005fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC5 5576 bytes
SHA-256: 801a908693c3775e06634ee3582700057f37f0111b4cc494b0a6f16517a87f2a
font_01_sfnt_off000072bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BC 9852 bytes
SHA-256: b9d42de7b4f9049c99a51b053612bfe709c0d0994dd3c1c98d16c61bcbc100cc

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