Malicious PDF — malware analysis report

Static analysis result for SHA-256 028f30d21891039b…

MALICIOUS

PDF

42.6 KB Created: 2020-08-09 20:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 758fdc7b73212d9794b80daad33ea185 SHA-1: 9557dd41cae62bbba3013aa9b7dec086252f9ae6 SHA-256: 028f30d21891039b8b8435cc9be037afed85e9ebd2e2cba31420eae4755d12a5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and redirects to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier strongly supports maliciousness. The embedded URLs, particularly the redirector, are the primary indicators of malicious activity.

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=vias+de+administracion+y+absorcion+de+farmacos+pdf In PDF document text
    • http://files.crystalbluffs.com/uploads/1/3/0/8/130874110/7936978.pdfIn PDF document text
    • http://lotokevad.tccoloradobaseball.com/uploads/1/3/1/4/131409090/cba96160e553d8.pdfIn PDF document text
    • http://files.newparanormalinvestigators.com/uploads/1/3/2/3/132303035/98dd27982faf.pdfIn PDF document text
    • http://files.whitebgallery.com/uploads/1/3/1/6/131637043/zagupuzegeresu.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/1/0433/7922/8837/files/46730493823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/domamusuvusuzexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/physics_principles_and_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/irish_bagpipe_tunes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/tepevijekitidoperal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2579/1133/files/aspire_3_a315_54.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/tuwogotodavujuviraseri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/wonaxinujejivij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/destiny_2_air_move.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8394/6397/files/xedowezogab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/zamuzogejetunekimupikivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/bin_sachivalay_clerk_book_world_inbox.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 4

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_off0000664c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664C 5476 bytes
SHA-256: b87fb8373d1cc2732c623cc46e60fb97f18604ffdd427899ad251c189ca68e40
font_01_sfnt_off000078dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DD 10628 bytes
SHA-256: 5b2818d86fdcf176e9773167c22c12c9f21f3562c0f8112151af61e4166a7d03

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