Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dfdadf2926497e8…

MALICIOUS

PDF

81.0 KB Created: 2021-03-14 10:43:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c696a72e73907100293f7d1422448736 SHA-1: 7e44b95f27dcb190c7280bcdb537dbf8c13b6bc1 SHA-256: 3dfdadf2926497e82a417cccc3f8ff392bc49695e81e30a9d4b5fabaab4dc943
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing operation. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as 'Pdf.Phishing.Trojan'. The embedded URLs, such as 'https://golowaki.ru/strik?utm_term=dyson+dc50+cleaning', are likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/strik?utm_term=dyson+dc50+cleaning PDF link annotation
    • http://rijewomel.scienceontheweb.net/87468586806.pdfIn PDF document text
    • http://gagitevanonuti.mywebcommunity.org/62505887339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450731/normal_5fd2f5d90b6bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417029/normal_602af5f3eaed9.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/59060289371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486987/normal_60148595d5ec0.pdfIn PDF document text
    • http://wojesukuzak.mygamesonline.org/ditowofejixazulosa.pdfIn PDF document text
    • https://piminudoligot.weebly.com/uploads/1/3/4/6/134688392/gamuri.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/811556875.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408352/normal_5ff2f33492973.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382961/normal_5fd8fc9796c57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505363/normal_5fd9193c10e32.pdfIn PDF document text
    • https://febumade.weebly.com/uploads/1/3/4/7/134757335/49f5493d3a377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453118/normal_600cf213e9c31.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/neoprene_gloves_chemical_resistance_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420248/normal_5fe7bbb5505f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388818/normal_60337cbb77133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374009/normal_604d18aa94d76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470833/normal_600a292d1a1c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417408/normal_5fee1b2251e51.pdfIn PDF document text
    • http://xilatotes.sportsontheweb.net/klipsch_r-10b_no_sound.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C6 5088 bytes
SHA-256: 7cf67d6458de26f67aaa62501dea97b31cf6d4bd3d8ec1a9f2d832e719c5874d
font_01_sfnt_off0000f71c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71C 2712 bytes
SHA-256: 0b2b93d9a33bea114ed67df8e8bcde093a6f6f15a1698783125a23d27215fe7c
font_02_sfnt_off000102b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B9 10828 bytes
SHA-256: c8c2451b4537a18efa81d5173ff2da1c4764935fc7dea8577da529beba4cbfc5
font_03_sfnt_off000127e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E1 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230