Malicious PDF — malware analysis report

Static analysis result for SHA-256 445936c48d01e2e7…

MALICIOUS

PDF

45.2 KB Created: 2020-10-24 09:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: a9480157b8d145e63b3f38670b1f0fd9 SHA-1: 61cde6d0092961ee5c32940f4dc750020fd0e1bf SHA-256: 445936c48d01e2e7928491118b154b0a0b617f7459828b40686d715824c5c0f1
184 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to disposable hosting and are likely part of a link farm designed to manipulate search engine results. One prominent link redirects to a malicious URL, suggesting an attempt to lead users to a phishing or malware distribution site. 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/wb?keyword=online%20income%20tax%20return%20filing%20procedure%20pdf In PDF document text
    • https://xebivonejawaf.weebly.com/uploads/1/3/4/0/134096192/c2d4f0c2710e1c.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/6578987.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/32c160ed5a15f.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/redirutaloxiviwirage.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/ririxuxikasod.pdfIn PDF document text
    • https://lorebigida.weebly.com/uploads/1/3/4/3/134377432/wilofemexefolam_taxuwomazurad_jepume_lazagowol.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/zuxupabupi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/adbc4e72-3aab-4a79-9f94-7958004df9f4/63944942733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de1fe636-757c-4206-9708-6dd08af856b6/barges_song_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e0dfd1c-fe1f-40ce-a82e-271d04a406fe/fitudoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6050/1921/files/comcast_tv_guide_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3357/5075/files/18429856278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2844/7900/files/dd_3.5_handbook_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0672/3749/files/nazuredod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3990/6209/files/multiplicative_inverse_property_of_2_7.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/mosizuxefi.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/28501676736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc2f75d-4b1d-4963-9660-03bb2d871b5c/49008960358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a6972c1-292d-4c71-991c-93ab733f5401/dewibepodop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a1b2cd6-db23-493c-8da8-aba0d8960b41/40341735803.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7188 5392 bytes
SHA-256: f281ef7f217982839e8cd488222ae6e40092410a0408db7831c448d799d0378a
font_01_sfnt_off000083d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D1 10244 bytes
SHA-256: 953873b704d60b6af6438eba4d461288089a7697e06e26e9fb1ac0c2743fcb40