Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1a91603fc7075e…

MALICIOUS

PDF

38.3 KB Created: 2020-09-16 21:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a99e87492f5d6c000fa0c414f0ebbb68 SHA-1: d166278f75b594419de51d8db4b7342e1fa8dec5 SHA-256: ff1a91603fc7075ef01a4c7590c64804b74bdff8b807053f2b965e5973b94618
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links to external websites, including a known malicious redirector. The document body, though heavily obfuscated, contains text related to automotive service and repair, suggesting a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating an attempt to drive traffic to malicious infrastructure.

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.club/wix?keyword=automotive+service+inspection+maintenance+repair+pdf In PDF document text
    • http://zitav.reaysplace.com.au/uploads/1/3/0/7/130738711/4060173.pdfIn PDF document text
    • http://teduga.b-dogdesign.nl/uploads/1/3/1/4/131406535/6897724.pdfIn PDF document text
    • http://files.pdcreccenter.com/uploads/1/3/1/3/131384249/ca05dc52b3e3b1.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/1/0435/5912/5153/files/sokalevudapovojerumake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7445/2632/files/tidutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1907/4716/files/bixutupojagomeped.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5032/7451/files/paper.io_2_unblocked_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/certified_ethical_hacker_v10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/25834311505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/dungeon_maker_challenge_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5789/files/antenatal_care_guidelines_fogsi.pdfIn PDF document text
    • https://ce989753-a5b0-4ed7-a2e3-165f8491e4f0.filesusr.com/ugd/e50c99_429efe9b232047018d6eb52f328e8580.pdf?index=trueIn PDF document text
    • https://18a740b7-cd94-4de1-8fdd-98c26112fb5f.filesusr.com/ugd/debdc1_03349ab7fd224615af20899c0f39696e.pdf?index=trueIn PDF document text
    • https://a9179f4f-554c-4ff9-9444-e7f426647c84.filesusr.com/ugd/2d797c_0dfc9f26ddc3432aa5124171789616dd.pdf?index=trueIn PDF document text
    • https://c4fd2dbc-d125-42af-9b94-ae9ba9365d8f.filesusr.com/ugd/c83fdb_702b0d098d174bdc92c0ce7a53811e5e.pdf?index=trueIn 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 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_off000057ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57EE 5316 bytes
SHA-256: 0da7bba939a79206f8712b24f64223541a988c862f5fee279eb9385bc9ee69ca
font_01_sfnt_off000069f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F5 9896 bytes
SHA-256: d7df3ad32e1366fb38cfcc7cc4d1578f08b279a9bdbe0f678ddb9756f94b8e3d

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