Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cdfdba5e27aac04…

MALICIOUS

PDF

40.5 KB Created: 2020-08-23 21:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dcb6e1af00bdda02f592fcabc9faa5b SHA-1: 2aab20c6ecd5c84035659285db98c4050ddf64a8 SHA-256: 3cdfdba5e27aac046c63f8bea5e820e94f80a4d78ff3f25175984edad57e550e
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=synthesia+piano+apk+full', suggesting a lure for software downloads. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to manipulate search engine rankings or distribute further 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.cc/pify?keyword=synthesia+piano+apk+full In PDF document text
    • http://soseniwe.lifetimeepoxyfloors.com/uploads/1/3/0/7/130776321/0fb88f3881.pdfIn PDF document text
    • http://winulip.artfullyfrosted.com/uploads/1/3/0/7/130775045/256382.pdfIn PDF document text
    • http://files.nourishingjourneywellness.com/uploads/1/3/1/4/131437308/784f28b68746.pdfIn PDF document text
    • http://zuwadubem.stoneycreekcacti.com/uploads/1/3/1/6/131606345/beberogibe_wowimumibobe_rumifuzuf.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/97428896976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/lejamovur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/bpsc_sociology_optional_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/lowazozinorowogikuxotanab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6594/9862/files/bhagavad_gita_telugu_file_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/nilivuketedajopus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7616/files/70402513075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7518/2496/files/essential_mathematics_for_economic_analysis_knut_sydsaeter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/pdf_converter_computer_bild.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/boishakhi_mela_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/ring_of_spell_turning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5478/3893/files/bronconeumonia_pediatrica.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_off000060f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 5164 bytes
SHA-256: 1ad9faedba5c9a14a5fcd499e9a5f58ab5294bfd9780936f84439b1ab1a458d4
font_01_sfnt_off0000727f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727F 10136 bytes
SHA-256: 199952efd9882f5ecb72d2ed8dd1ab75e2ae4c4fe9a8d2d88134e680a2b944ea

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