Malicious PDF — malware analysis report

Static analysis result for SHA-256 90c1ddbe19130ce8…

MALICIOUS

PDF

51.4 KB Created: 2020-08-20 02:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc9f718748ac1d28106167ee3e915cdc SHA-1: 1a7888bbf095a06d980d545fa4fa92683cd7c5b6 SHA-256: 90c1ddbe19130ce883e8fb65489a8c728cc04282c6e2b92592a43ba47b46e95e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=aterosklerosis+dan+arteriosklerosis+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. The presence of a large number of external PDF links also indicates a link farm, likely for SEO poisoning or to obscure the malicious redirector.

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=aterosklerosis+dan+arteriosklerosis+pdf In PDF document text
    • http://files.bellavocesoin.com/uploads/1/3/1/4/131453124/7ce767e488.pdfIn PDF document text
    • http://files.myollimaattacollection.com/uploads/1/3/1/0/131070331/rireberodefuleb_benivu.pdfIn PDF document text
    • http://files.kingguideservicearizona.com/uploads/1/3/1/1/131163635/08488d8a8a6309e.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/1/0433/0687/7080/files/risekumomivedopela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3265/8588/files/25565091633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6867/0620/files/woxunixogomaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2024/7194/files/tesusajuxopizomibojoromaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9313/8333/files/siguwuxafesiwaposet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/rujanoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/64702368931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8722/4214/files/patabuvomalosufujera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7826/3718/files/wastewater_treatment_plants_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4324/8533/files/john_deere_317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7382/2115/files/somatic_cell_hybridisation.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 4

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_off00008b95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B95 5088 bytes
SHA-256: 97be14884b8f631bf6e14d888240e4ac8f941fef9b6f72ec2f0a98df93ed34fd
font_01_sfnt_off00009cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF1 10344 bytes
SHA-256: 8394c9bed9054e5fe4d4eecb25d15fb522b41915ebd34e45cc86942fb96ad7f2

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