Malicious PDF — malware analysis report

Static analysis result for SHA-256 884375ccdecf28a6…

MALICIOUS

PDF

45.9 KB Created: 2020-08-14 02:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7ac0aa65cdcf3bacc2b3d33e03336c8 SHA-1: 1bd79ad825e14aa39655bcc18a6cd5c0d44e6935 SHA-256: 884375ccdecf28a654d8af8e0bd487b97be66db7c108eafb55985a439bf3e6ef
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is associated with malicious activity. The document body itself is heavily obfuscated but contains a reference to the same redirector URL, suggesting an attempt to lure users to malicious infrastructure under the guise of providing a PDF. The ML classifier strongly supports the malicious verdict.

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=sarcoidosis+uveitis+pdf In PDF document text
    • http://files.taylorsgreenhouse.com/uploads/1/3/1/4/131406369/wefukax-vodov.pdfIn PDF document text
    • http://peduxa.newaygocd.org/uploads/1/3/0/8/130873782/kejej.pdfIn PDF document text
    • http://files.thestyleofsubstance.com/uploads/1/3/1/4/131406604/590218.pdfIn PDF document text
    • http://files.koshishpanindia.com/uploads/1/3/0/7/130776241/a49eef129f7d8.pdfIn PDF document text
    • http://files.xcelerationvbc.com/uploads/1/3/1/3/131383743/pivarafu.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/1/0446/1517/2259/files/2527320423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6019/8557/files/ielts_writing_task_2_samples_academic_band_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/juzakitasapogenog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0388/5206/files/54022581176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/4858692406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0858/7936/files/english_grammar_learning_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/causas_y_consecuencias_de_la_contaminacion_atmosferica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3298/3190/files/19056262961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9963/5355/files/wabimagetobizatofevuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/wumesolobobizuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/renexupejativuk.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
🗂 Part of campaign: biographyofanobody.ca 5 samples

Related samples 5

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_off000075aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AA 5280 bytes
SHA-256: e06e9cbdeceade8515e63aeb8357939c0e9b824f4b0a40044a64400ac55bb2fe
font_01_sfnt_off000087ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87AE 10292 bytes
SHA-256: 3a3c8a076dc7605537186aaa8d9246ef4eb0c15489fc40279df15c291fc5d8c4

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