Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0001bf21ee1cd9…

MALICIOUS

PDF

37.6 KB Created: 2020-08-04 11:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbf49b608a8903f5efdadfa2ded8b83e SHA-1: 380a407937f11f8dc035205c77b4f08ad9e6ce2e SHA-256: cc0001bf21ee1cd9a5f67cea8f1217a1c6f370abcee2f7e19da75fbee0162c9f
194 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a puzzle book. This is further supported by heuristics indicating a malicious redirector and a link farm. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive link.

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=adda+247+puzzle+book+pdf In PDF document text
    • http://files.meridianbodycare.com/uploads/1/3/1/8/131857193/6976761.pdfIn PDF document text
    • http://files.decrisis.org/uploads/1/3/1/4/131453247/6679a21a.pdfIn PDF document text
    • http://files.dickeyclan5.com/uploads/1/3/1/3/131379894/sireferofat.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/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7789/2264/files/alibaba_business_model_canvas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7075/7795/files/sydney_central_station_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/ladulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/zikovonutajixavexovefaxar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6369/7817/files/jefunemeratafifuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/wizobuwazesitax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2665/files/ahmad_jamal_poinciana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/68007763019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/razekaveluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/42879284474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/what_is._aae_file.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 8

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_off000055d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55D2 5304 bytes
SHA-256: c4866976dad29edefac29af749b3208ba0b7f456f075191531972c8160f61d1f
font_01_sfnt_off0000680c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680C 9984 bytes
SHA-256: 5f25b5511c71c359acdc87af96087010f20de884a7d453773a17853879b195bb

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