Malicious PDF — malware analysis report

Static analysis result for SHA-256 f743efbc60111b33…

MALICIOUS

PDF

45.6 KB Created: 2020-08-18 19:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b36a1a7aabeee0988ec19bed7ad5f1c SHA-1: 7e4dc04375e462fc03374d1f6a2a29be7f26079d SHA-256: f743efbc60111b338c67d7e2f26c400343d4cb6120b6d4394e2ae6deab752be3
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains a string that appears to be a search query for 'children's birthday party songs free' followed by the malicious URL. This suggests a social engineering lure to trick users into clicking the link, which then redirects 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.cc/pify?keyword=children%2527+s+birthday+party+songs+free In PDF document text
    • http://mozeva.whslionswrestling.com/uploads/1/3/0/7/130738909/59e955fa.pdfIn PDF document text
    • http://files.marielarraineweir.com/uploads/1/3/0/7/130740589/7826235.pdfIn PDF document text
    • http://gumaxafe.designhur.com/uploads/1/3/2/3/132303374/7982860.pdfIn PDF document text
    • http://files.neworleanspastlives.com/uploads/1/3/0/7/130775370/7b354170ee1e162.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/1/0430/2536/7193/files/wordly_wise_book_8_lesson_9_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/bixujonudakapibopirule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/kalirutufamisavanival.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0802/3966/files/self_defence_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1205/5463/files/97750029068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8666/7158/files/rabubelawafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/35695834193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/tuvot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8108/8670/files/sociology_1st_year_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/25649950277.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_off000072df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72DF 5484 bytes
SHA-256: 2de752e6789b93730ee3a207b7a4d53066dd9493c4947773254702359a3f31d6
font_01_sfnt_off0000857c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857C 10440 bytes
SHA-256: 3f80b63c1bbb38c7a79d0a4f76724bad3a795005d9fc5c4ebd983f6d2e645910

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