Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b6131e199a12ea1…

MALICIOUS

PDF

49.9 KB Created: 2020-08-08 06:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e747dd8f617c683e7561b937ad1c91b SHA-1: 889e1c05e1d8d0382c2ccd38457744440dd721e6 SHA-256: 3b6131e199a12ea156723245b9eca460e67dc7d2c58d0b959095c8fe84c1dcc4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=flujo+de+energia+cadenas+troficas+pdf', which is also flagged as malicious. This suggests the primary purpose is to lure users to a malicious site, likely for further exploitation or credential harvesting.

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=flujo+de+energia+cadenas+troficas+pdf In PDF document text
    • http://files.nationalgeomaticscomp.ca/uploads/1/3/2/7/132740978/kiwosinoxote-nisozunewaronog.pdfIn PDF document text
    • http://files.relaxmassagetherapyclinic.com/uploads/1/3/2/6/132682884/nozenopal-pakuwimaferib-zaxezuti-vobidol.pdfIn PDF document text
    • http://files.tealthreads.com/uploads/1/3/0/9/130969728/5920267.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/1/0448/1767/8497/files/pdf_to_autocad_online_converter_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nalekubaserigudopen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4253/6598/files/kavibed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8091/4846/files/60723398206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/aladdin_story_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7010/3452/files/wobara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/26287526297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7014/files/progressive_bulbar_palsy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/diwim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/62234976237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/iupac_naming_of_inorganic_compounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4364/2773/files/tanafefozugefowutigawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/cateterismo_vesical_en_mujeres.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/82242541410.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 8

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_off000080f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F0 5356 bytes
SHA-256: ec21253ae8592aede4ea95a8d293673b4dffe6be4f66f2fcc76ddb5f0dd9a39b
font_01_sfnt_off0000933d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x933D 11620 bytes
SHA-256: 87c342dffb2df008544e70414f8cc9b348a5b398e022cf127cb5272bcbbe6a32

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