Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0d4c381ce2799e…

MALICIOUS

PDF

37.7 KB Created: 2020-08-26 16:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c53bce06040ba1f4d4754cf73cd70502 SHA-1: 23f40845555d1e576cee88b292614740e0d99210 SHA-256: 0b0d4c381ce2799e67657f6421d8071060334ee6418a1b5e659cf5665fe8c7e0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm designed to appear as free downloads, but it redirects to malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=harry+potter+libros+mercado+libre, which is flagged as malicious. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on Shopify, likely to improve search engine ranking for the lure. The ML classifier strongly indicates maliciousness.

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=harry+potter+libros+mercado+libre In PDF document text
    • http://files.clc-photographic.com/uploads/1/3/0/8/130814085/pusalidozezuvow-migoj-mador-vibatiwimuxo.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/1/0431/7233/1675/files/23326241156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/31514356179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9689/8724/files/nasekunonabagera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2054/0310/files/acog_pelvic_exam_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2046/7869/files/4294420242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/carrier_split_ac_error_code_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1073/files/89812521239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1474/1413/files/telecharger_bible_aelf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6903/6962/files/46763462631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/warajawotabitelal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0105/1293/files/51091373062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/fovajudilekobosijolife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/print_handwriting_book.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 2

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_off000054df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54DF 5424 bytes
SHA-256: e7d0981bb31b600fc9251638b15ea3837e9d4216e9dcdfb905d259dd3bca2197
font_01_sfnt_off0000672f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672F 10212 bytes
SHA-256: 7017fd6006c40f745aaee8057406b4a7ee033d45c58cbdc9d5d2b353eb2a5f4b

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