Malicious PDF — malware analysis report

Static analysis result for SHA-256 08d32a2891e627b1…

MALICIOUS

PDF

75.7 KB Created: 2021-03-30 05:52:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 623c13616e46dce4776e51d3de830ca3 SHA-1: b2246b2692c94d5d2a78c6cf3a39fd2d450971c5 SHA-256: 08d32a2891e627b1f741e8cfba840300476a99756689bea87fc6b183bd5d48ad
126 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam campaign. The ML classifier strongly indicated maliciousness. The document body, though heavily corrupted, appears to be related to a worksheet, which is likely a lure to encourage clicks on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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://jumiwimov.ru/wix?keyword=parts+of+a+cell+worksheet+answers PDF link annotation
    • https://pixelisikug.weebly.com/uploads/1/3/1/4/131407736/4942828.pdfIn PDF document text
    • https://vudexugir.weebly.com/uploads/1/3/2/7/132710723/7075756.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/1559785.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/ven_seor_no_tardes_tanto_letra_y_acordesdi3g3.pdfIn PDF document text
    • http://leyloften.online/card_creator_for_crgcrg9.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/cisco_meraki_mx60w_manualz3pgw.pdfIn PDF document text
    • https://ritibamubube.weebly.com/uploads/1/3/1/4/131437410/visitamosanetiw.pdfIn PDF document text
    • https://migigagabigugam.weebly.com/uploads/1/3/0/7/130775968/eb262e3cd46158.pdfIn PDF document text
    • http://dlkmvkoenv.info/how_to_use_symbolism_in_poetrynynou.pdfIn PDF document text
    • https://jasefukop.weebly.com/uploads/1/3/0/7/130776564/xisasosoru_voxotokabobedag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c1ab63b4-4781-4901-abeb-f581ed41d26f.filesusr.com/ugd/b44917_d0bc5afbce3543d697cb2ea59f893ece.pdf?index=trueIn PDF document text
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_e4f152b7ab6c4b41b0ba68e86f55eba7.pdf?index=trueIn PDF document text
    • http://dajaxul.epizy.com/50460840208.pdfIn PDF document text
    • http://milisepidug.rf.gd/android_auto_wireless_ford_fusion.pdfIn PDF document text
    • https://460eb545-5389-4aa9-9e78-d1074a8bca0c.filesusr.com/ugd/21a131_a1c8851282644ee8bf2f051bed87ee6d.pdf?index=trueIn PDF document text
    • http://pasalalu.rf.gd/what_is_a_safety_culture_in_the_workplace.pdfIn PDF document text
    • http://zuzipidagazetu.rf.gd/how_to_clean_dryer_vent_whirlpool.pdfIn PDF document text
    • https://327bbe42-9aa5-4ca0-80e5-6c9857058a26.filesusr.com/ugd/2b870b_e3bf2014bd8c4fb0a980a69071f32a72.pdf?index=trueIn PDF document text
    • https://37e0f79d-b0c1-4727-b76d-5b759c81288f.filesusr.com/ugd/9c66ff_374edae5b5d44722a318af2796e592f3.pdf?index=trueIn PDF document text
    • https://770ad53b-b55e-4e58-b1eb-3709f41304f7.filesusr.com/ugd/98e298_1fc81e01558d4af99f2d94929d4b9217.pdf?index=trueIn PDF document text
    • https://d0275d90-c5b4-4c72-b581-d0e2b62fc6dd.filesusr.com/ugd/ee54da_86d38a0d0d0c4cc9868072ebc09baf7c.pdf?index=trueIn 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_off0000ebb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB6 5124 bytes
SHA-256: 14c7025cec8f22aa666fed9099700fc7c9450f51e3a53e841e93c8a1313693a9
font_01_sfnt_off0000fd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD33 10716 bytes
SHA-256: 5358a8de9feaad0da80cdfd45011e769c6aa5686bfc603ca6907560507da221f

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