Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e757ec4a74195a9…

MALICIOUS

PDF

34.0 KB Created: 2020-08-21 05:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee5372b8049b8d455890ee5900c141e3 SHA-1: 6f4659d05e1bb14268834c4c4a7bcf4df7e3cfdb SHA-256: 0e757ec4a74195a932ddc3c4a5ab020f3a1caeca9d6180a5fea43b9b6a33fb6f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=mole+conversion+worksheet+chemistry+1b+answers'. The document body, though partially obfuscated, also contains this URL and other links to PDF files hosted on various domains, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated 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=mole+conversion+worksheet+chemistry+1b+answers In PDF document text
    • http://files.rvabookloversfestival.com/uploads/1/3/0/8/130814397/xivoli.pdfIn PDF document text
    • http://files.bluevista725.com/uploads/1/3/1/3/131381095/5070035.pdfIn PDF document text
    • http://files.merakihh.com.au/uploads/1/3/2/7/132740193/3746914.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/1/0440/6080/3237/files/exploracion_del_nervio_vago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/71684927282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/56100244924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/kufab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/40687510731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/lotus_1-_2-_3_spreadsheet_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0298/6659/files/jowedumukipinabipi.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_off00004617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4617 5552 bytes
SHA-256: b3cf8f9cd1a74f5953ad04be0b37549eb21e2664cb2e3033fcdd650f66d9b3e4
font_01_sfnt_off000058ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58EC 10128 bytes
SHA-256: b23bf4ec2fd5b4a95bf10db8f6cc4bd1a026855eb822d40317bec2c379f7a102

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