Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e05557fcb8ceeca…

MALICIOUS

PDF

34.1 KB Created: 2020-08-24 10:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b181ebfedcb1eb01fa8fb7f6f3fd5420 SHA-1: a1e464f48d888f68fac5bf845bbbf953f0dc8c13 SHA-256: 3e05557fcb8ceeca9f414e9e62fffe2624e2166c50eb4af3f7ce4e2af68a29fe
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.com/pify?keyword=celebration+background+images', points to known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was largely unreadable, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=celebration+background+images In PDF document text
    • http://taxij.parkcitybrewery.com/uploads/1/3/2/8/132814930/jutikoxukat_viretomesepex.pdfIn PDF document text
    • http://files.mikewimmerportraits.com/uploads/1/3/1/8/131871698/3217417.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/gixotivibawigen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/baby_pictures_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/88167600601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3990/files/90573644228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3383/files/31494577822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7015/1061/files/97951752237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9559/4910/files/actaris_electric_meter_ace9000_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5813/files/jafej.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D8D 5368 bytes
SHA-256: 0cdaaec7419c6df3cff40ecf5b0d3931edc7493f5edcb232cc94881bd3c87514
font_01_sfnt_off00004fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA6 8924 bytes
SHA-256: 22b972ab6beb300ceb1f24590fea18ec945c090cc40adb84a330272af0d5b8d5
font_02_sfnt_off00006e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E06 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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