Malicious PDF — malware analysis report

Static analysis result for SHA-256 71bdcfe7aa95eb99…

MALICIOUS

PDF

67.8 KB Created: 2020-08-19 05:53:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b19ee3af2c83e3b9d5fbab1ec3c54b8 SHA-1: 92e99939448ac82e7c0494d0cc19e8a94031fe66 SHA-256: 71bdcfe7aa95eb993c9a3e866aabb15d36988aa18e82f1e1577dea09f9b61789
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded URL `https://ttraff.cc/pify?keyword=free+responsive+css+admin+template` is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text and URL, reinforcing the malicious intent.

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.cc/pify?keyword=free+responsive+css+admin+template In PDF document text
    • http://files.kikinaart.com/uploads/1/3/1/3/131383651/xakigunuxexosopaso.pdfIn PDF document text
    • http://files.ulverstonoutsiders.org/uploads/1/3/0/7/130775197/3a226dd77b5754.pdfIn PDF document text
    • http://files.usfitnessfreaks.com/uploads/1/3/1/0/131070973/sidizip_ronuwiv_velosadogi_mebowa.pdfIn PDF document text
    • http://susubomen.ghsmustangvolleyball.com/uploads/1/3/1/3/131382134/liwufaramuzefi_nufadavag_sefusepa.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/1/0435/3071/5288/files/xowokadovuvupasokesedanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6987/4082/files/22812461840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/5445/9030/files/sivivuvexefiwanazutatutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/61472689679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruxejuvekega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1191/4403/files/ruloseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/moko_hibachi_google_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2901/2381/files/modubazipagazekok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3869/5846/files/easy_learning_english_verbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/99595623271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8307/9584/files/59562289837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0805/7759/files/cheap_trick_mighty_wings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4188/1253/files/campbell_biology_11th_edition_reddit.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_off0000cdfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDFA 5232 bytes
SHA-256: 8b74f245441a0c9ebd8a77ddb3c17515e84f1300b8d9becdbee1fafb40e922e7
font_01_sfnt_off0000dfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB6 10012 bytes
SHA-256: 790ad504a49a99bab9be22c72a5a8e88104faa100e5b2d351fea02a13665dbe3

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