Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a457bba70b95b1a…

MALICIOUS

PDF

48.5 KB Created: 2020-08-08 19:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81e38d3c6bea455713be8ddf8ca85b26 SHA-1: 73a271849f732595440dd6535445a7a5f1fe5de3 SHA-256: 0a457bba70b95b1af98b8cc3341e20c05a65306eeb4c2cb931ed25974802eafc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as a free car magazine download, but they redirect to a malicious site. The ML classifier strongly indicated maliciousness, and the presence of a redirector link confirms the intent to lead users to harmful infrastructure. The document body itself is heavily obfuscated and contains embedded URLs.

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.ru/pify?keyword=car+magazine+online+pdf In PDF document text
    • http://vusobud.edharwoodmemorialclassic.com/uploads/1/3/1/4/131453133/1b3d488f.pdfIn PDF document text
    • http://files.daddysmoneymarketgoats.com/uploads/1/3/0/7/130776295/81d75c732e98.pdfIn PDF document text
    • http://files.fionabelousz.com/uploads/1/3/1/3/131398117/gebapuxavumuxi-bozono-nozogovuzekupaj-dewafupujadamob.pdfIn PDF document text
    • http://neloxat.didactic-engineering.com/uploads/1/3/1/4/131406086/loboruba_woguwuji_kedotipatife_tewege.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/1/0432/0460/8155/files/jewipojomisusuwuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7078/3645/files/67351150949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4679/files/38421432187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/lepowoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/96279622486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5481/6667/files/gta_sa_trainers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/desktop_weather_for_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5975/7727/files/texupev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7829/files/fuvajik.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 1

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_off00008087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8087 5140 bytes
SHA-256: 9914f648dc45e6705805c62dcb32abbce0d8fcc953861b89d1605afa328632b6
font_01_sfnt_off000091f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F6 10496 bytes
SHA-256: a70007e0985299ad0b0612084615d8b73842c61a94143d81c31d31dd98e822b2

Open this report in the interactive analyzer, or submit your own file for analysis.