Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4e3d64688871cbb…

MALICIOUS

PDF

46.2 KB Created: 2020-08-09 15:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13de47facda1bfbb7d66d8cfb97fdaac SHA-1: dcf7dc24c4b83cb86696277605a5cb6cbea064fb SHA-256: e4e3d64688871cbb9025a75e483cf293b5a89a5a39ce660059e509d1db4540e1
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 pointing to external PDF files. One of these links directs to a known malicious redirector, ttraff.cc, which is likely used to obscure the ultimate destination or deliver a malicious payload. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lure users to harmful content.

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=anorexia+en+los+adolescentes+pdf In PDF document text
    • http://zadowagas.emahsin.com/uploads/1/3/1/1/131164250/2190166.pdfIn PDF document text
    • http://bunox.sambarsky.com/uploads/1/3/1/1/131164239/riguropigepe.pdfIn PDF document text
    • http://fabekara.socaloverland.com/uploads/1/3/0/7/130738720/eaacb417.pdfIn PDF document text
    • http://files.bayareaboatandhomeloans.com/uploads/1/3/1/4/131407227/dekufiz.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/1/0432/6073/9752/files/76737506725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3041/2437/files/maven_asciidoctor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/benedicta_ward_sayings_of_the_desert_fathers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/17831195824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/85315853238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4875/4600/files/need_for_speed_hot_pursuit2_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0822/files/runifux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/misamiviraxujeter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6960/9886/files/45109594699.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 3

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_off000066ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EA 4992 bytes
SHA-256: eea1e7c7c271585dd4e3c7cca656aa7a2fee1a2f4223f650205da2403fdeea61
font_01_sfnt_off000077e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E9 11164 bytes
SHA-256: 0d6214e954a4f3d35f4b5d51905b56e0336a580ce9338ffcbecf04387978c4c6
font_02_sfnt_off00009c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C29 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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