Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af741d96afdc81e…

MALICIOUS

PDF

40.1 KB Created: 2020-08-22 02:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f1f6c1b71e5867515956c7ad35aacd3 SHA-1: 74cfbb9ac627c51bf9455100d6c512d73db017e3 SHA-256: 8af741d96afdc81e155b726f86d0e9769127d8d12393ab44ae587fd179626461
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, also contains the primary malicious URL. This suggests a phishing or scam attempt designed to redirect users to potentially harmful 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=polaris+performance+parts+canada In PDF document text
    • http://files.biomedlabs.org/uploads/1/3/0/8/130814124/tavagovoga.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/1/0437/1080/8213/files/43447459973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7423/2996/files/attendant_care_needs_form_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/request_letter_for_job_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/lunajajadalumakodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/vasesazow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5649/5783/files/79082592426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/can_t_help_falling_in_love_piano_sheet_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0036/3169/files/701215514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5254/3649/files/minimal_html_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9365/9543/files/gugaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/97943647523.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_off00006026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 5300 bytes
SHA-256: 804e06e3ee8ef4651934fd757a5fa1f70c7eb975df635c0d348aad3fa557a263
font_01_sfnt_off00007210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7210 9888 bytes
SHA-256: f727066b79813a48181a210d90f482989b13792feca4c88a176301338067e237

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