Malicious PDF — malware analysis report

Static analysis result for SHA-256 9625c38e8591f1cc…

MALICIOUS

PDF

41.2 KB Created: 2020-09-19 02:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7964a3eb383e56cab7155f1fcf760be6 SHA-1: cf1e24c7899faa595dfeed521ea597553e2bf260 SHA-256: 9625c38e8591f1cc2adaa4946c18eb18ad4a25f1ea7b7ee1f80602ebbe6833d5
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for "Tangle table answers". The presence of a link farm heuristic further suggests a malicious intent to drive traffic to external sites, likely for further exploitation or phishing.

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.me/wix?keyword=tangle+table+answers In PDF document text
    • http://pufodez.computerclubrhcc.com/uploads/1/3/2/7/132740214/xitorigupidozuzanuj.pdfIn PDF document text
    • http://files.cookinletliteracy.com/uploads/1/3/0/7/130739570/kokozuvolosufat.pdfIn PDF document text
    • http://tumigireg.thirdcoasthealth.org/uploads/1/3/1/3/131384424/vujujiluzi.pdfIn PDF document text
    • http://zepebal.kerrymckenzie.org/uploads/1/3/0/9/130969336/8199284.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/1/0432/8918/2376/files/lilibaketukukanolin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/star_method_for_answering_behavioral_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8987/7408/files/report_daroga_ji_mamla_chori_ka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/meiosis_leptoteno_zigoteno_paquiteno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jomanumono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/7533422161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0134/8002/files/acca_exam_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/personality_definition_by_authors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0245/8022/files/hip_hop_gear_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0754/1401/files/89251792586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/68293985037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5112/1820/files/hard_boiled_egg_white_nutrition_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/sunavujugipubamovatu.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_off000063bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BC 5032 bytes
SHA-256: bd5f7e9909adee335fe983ae5f240d90d929b8fadc34aa67b3d35f7992d8c1e1
font_01_sfnt_off000074fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FA 10240 bytes
SHA-256: 824acc4fe6a617b659e5f337e3512ec7e348d6132cb59a958bea2d129b27628c

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