Malicious PDF — malware analysis report

Static analysis result for SHA-256 608201f3288096f1…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 01:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54ae68e6e441a836e3b72b5ee27a3754 SHA-1: 90fcd4a4164231f0782e00ad1ff9d930161adcbd SHA-256: 608201f3288096f1643758cf35970788359aa79854a7b931a9362489263a80c3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The sample also exhibits characteristics of an SEO link farm, suggesting an attempt to lure users through search engines to malicious content.

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=video+er+mac+app+store In PDF document text
    • http://wigizolo.casting4growth.com/uploads/1/3/0/7/130738850/tuwawosulom-luzasotuxu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/chinese_alphabet_with_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/47701113658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4865/5265/files/fobajulizeroturukif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/xojekujekazob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2108/6368/files/arithmetic_sequence_worksheet_kuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7145/4883/files/8th_grade_go_math_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4383/1464/files/carrier_thermostat_manual_wiring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/bejudagazuziraveku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/sijudabinasulateg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4368/2469/files/cessna_172m_checklist.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AC 4836 bytes
SHA-256: 92fc6f1906595a021c78bcddbf16dc71b06ffce5f006aeae5c0785160ced31c2
font_01_sfnt_off00007610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7610 9876 bytes
SHA-256: 497ac35eeca46e75a8474968832167beaa552c933e01eedc5b3846739919d28d
font_02_sfnt_off000097de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97DE 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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