Malicious PDF — malware analysis report

Static analysis result for SHA-256 70bca1fadd08e742…

MALICIOUS

PDF

32.9 KB Created: 2020-08-25 19:50:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98fe8f03554723efc19b852241d5970c SHA-1: 1dd9c6b37534f5cfe09f1f65ad6f28493376d7c6 SHA-256: 70bca1fadd08e742128ec81b0d654a086f4491e3de04649c56a7a6bd022dd641
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a link farm, masquerading as a file conversion service. The primary redirector URL is identified as malicious. The document body and embedded links suggest a social engineering lure to trick users into downloading further malicious content, likely to achieve initial access via spearphishing.

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=hwp+to+pdf In PDF document text
    • http://wunefim.frenchtwistmn.com/uploads/1/3/0/8/130874359/vurimujumibafa-dixejalogom.pdfIn PDF document text
    • http://files.graffitiwgratitude.com/uploads/1/3/0/7/130738814/808e7b1556b9ad.pdfIn PDF document text
    • http://luraviso.kitchenformat.net/uploads/1/3/0/8/130814328/winuzapuz.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/1/0430/5554/6517/files/zeduzafuvofupumatov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/netefamog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/27250302000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/junaboru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/zulafukubabikus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/amend_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3762/files/tumoganaduvubibilamozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/antenna_nptel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8132/6752/files/77293809635.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_off00004571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4571 4572 bytes
SHA-256: 6f6a7cb71aa226aadc4958c3e47e1683c41567a6c1d61344787da27b66974cc8
font_01_sfnt_off00005521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5521 10020 bytes
SHA-256: 566a079b893bd56a8b69077b1e1bab3783205475d76c79f9a3c3d4841ab3edf1

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