Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bc32cdd4b285c8…

MALICIOUS

PDF

81.4 KB Created: 2022-04-05 07:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: dba40d0046ceac5ad595422202153e48 SHA-1: 10897004e9bd1da928781a6724ae9474b4d77b1e SHA-256: 88bc32cdd4b285c86df0f219635df1422582f4b76cd0a8b90e024da7c52646ae
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by both ML classification and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous external URLs that point to other PDF files hosted on disposable domains. The document body text, while appearing innocuous, is likely a lure to encourage users to click on the embedded links, which are designed to lead victims into a phishing or scam scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/16216308401b76---wirepagitosajubega.pdf In PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/66b439425443c8d9dd1c55ad50544ae3/welan.pdfIn PDF document text
    • https://bigubiforuse.weebly.com/uploads/1/3/5/3/135389938/2414661.pdfIn PDF document text
    • https://alibaba-cave.com/userfiles/file/belonizagujawej.pdfIn PDF document text
    • https://fumuteserem.weebly.com/uploads/1/3/5/3/135333711/f768fc.pdfIn PDF document text
    • https://jonipafatanepa.weebly.com/uploads/1/3/2/7/132741476/nixuv_wegugilenid.pdfIn PDF document text
    • http://psychologadamczak.pl/userfiles/file/48992221539.pdfIn PDF document text
    • https://kukevukoleguko.weebly.com/uploads/1/3/4/2/134265740/40079b63095d21.pdfIn PDF document text
    • https://webmanagement.exing.ro/images/file/88147361042.pdfIn PDF document text
    • https://dipapira.weebly.com/uploads/1/3/4/6/134610741/c32b6a47593743.pdfIn PDF document text
    • https://pevolevu.weebly.com/uploads/1/3/1/6/131606362/3203603.pdfIn PDF document text
    • http://surinmajestic.com/phya/ckfinder/userfiles/files/jipewikanikupitevijake.pdfIn PDF document text
    • https://gobadelo.weebly.com/uploads/1/3/4/5/134594664/0c8d5b5856b58.pdfIn PDF document text
    • https://vokinojen.weebly.com/uploads/1/3/4/8/134851280/mexarew_sanika_rixazeginezex.pdfIn PDF document text
    • https://pudafeborebe.weebly.com/uploads/1/3/4/3/134335494/lodopozajej.pdfIn PDF document text
    • https://dujezipiver.weebly.com/uploads/1/3/4/6/134610991/gabivokutiramoj-kukasamemudijir.pdfIn PDF document text
    • https://zebilukirun.weebly.com/uploads/1/3/5/3/135306511/d6537c5ffa.pdfIn PDF document text
    • https://menokatea.in/ckfinder/userfiles/files/62937795315.pdfIn PDF document text
    • https://shibbirs.com/media/files/73241905046.pdfIn PDF document text
    • https://zipakodexosif.weebly.com/uploads/1/3/5/3/135344546/xuwike-mufexedesano-setiwatulab-wopizunul.pdfIn PDF document text
    • https://fepaxawasebunud.weebly.com/uploads/1/3/5/3/135327574/7235401.pdfIn PDF document text
    • https://sunuf.co.za/YmrXLWy8?keyword=what%20are%20fully%20hydrogenated%20vegetable%20oilsPDF link annotation
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/49ac28.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000d964.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d964.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD964 17248 bytes
SHA-256: fd9aef9cc232d1d03846fb654ef370ed3e544670f8869fdb49802f791b33bca2
font_01_sfnt_off000106ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC3 11048 bytes
SHA-256: cd9cd16bdf48535e3c30f29d0f9ce0ce15312126473ac373a23546592a36ef66