Malicious PDF — malware analysis report

Static analysis result for SHA-256 76cd0ecd2f64ec8d…

MALICIOUS

PDF

36.4 KB Created: 2020-08-11 09:36:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a224def425c7053e8ee18b85a6fecfbc SHA-1: 6ca41466009713f1b68e0962809df0d8456e1ad0 SHA-256: 76cd0ecd2f64ec8d37343fcf511d4eba5936f21b7027ea29dd7ca0526855b5eb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body itself contains the malicious URL, suggesting an attempt to trick users into clicking it for a fake download. The ML classifier also strongly indicated maliciousness.

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=sprawdzian+atmosfera+oblicza+geografii+zakres+rozszerzony+pdf In PDF document text
    • http://files.swampscottfootball.com/uploads/1/3/1/6/131606431/xasewubisopesetonite.pdfIn PDF document text
    • http://baxabiz.jacintaviolin.com/uploads/1/3/1/4/131437402/9437301.pdfIn PDF document text
    • http://penizili.robicheauxart.com/uploads/1/3/2/7/132710712/7204243.pdfIn PDF document text
    • http://files.hollingsworthlumber.com/uploads/1/3/1/3/131398360/0b365aff8b.pdfIn PDF document text
    • http://dupojir.jmossart.com/uploads/1/3/2/8/132814930/dusumuzotataj_jebevide.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/1/0430/7176/6695/files/23273239794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/2nd_law_of_thermodynamics_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9898/7941/files/minecraft_pe_0._12._0_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4940/files/jolly_phonics_word_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/batman_the_killing_joke_trke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/digital_marketing_assistant_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6563/0102/files/vixoneweduzefeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/kubop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/93507851875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9150/9919/files/likaki.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_off00004ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC5 6024 bytes
SHA-256: d101642651da33a854d982708047a92174c708ae4bfe2dfd567a40da0095857f
font_01_sfnt_off00005f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F49 11300 bytes
SHA-256: ce384c414560297118783703b6bc1ef20f84a0f5c8d04f783e0f5e7bca05270f

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