Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc3104a03cc3f29…

MALICIOUS

PDF

81.2 KB Created: 2022-04-14 10:55:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 4fa9ec571a88f8bc7fe1adfba3ae4ef1 SHA-1: d18c99319fe9dd510680ffee0d5ecf9f023a9a95 SHA-256: 1dc3104a03cc3f29de1f69989fe9675730528760e89297260e1a3a278fc78525
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://mifuj.co.za/YmrXLWy8?keyword=all%20oll%20algorithms%20cubeskills PDF link annotation
    • https://nupizerijubodo.weebly.com/uploads/1/3/4/8/134891039/1295679.pdfIn PDF document text
    • https://fuwowomazusora.weebly.com/uploads/1/3/4/0/134000162/ropebibufawuvi.pdfIn PDF document text
    • https://micro-logic.ro/images/uploaded/file/xemam.pdfIn PDF document text
    • https://mraos.com/web/userfiles/file/witazisowe.pdfIn PDF document text
    • https://4-pillar.com/img/file/5680685581.pdfIn PDF document text
    • https://1ar.sa/userfiles/file/wisivodasabalonuzala.pdfIn PDF document text
    • https://xalidowugeduvek.weebly.com/uploads/1/3/7/5/137514787/bab930b.pdfIn PDF document text
    • https://lekegabopana.weebly.com/uploads/1/4/1/3/141341440/4da235beb5d.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/162277d65a7769---49337917777.pdfIn PDF document text
    • https://liwuvena.weebly.com/uploads/1/3/1/3/131398027/3341612.pdfIn PDF document text
    • https://vixikuladiwepev.weebly.com/uploads/1/3/0/7/130738731/leridorobuka.pdfIn PDF document text
    • http://acrclubinversores.com/files/galeria/files/wojafi.pdfIn PDF document text
    • http://juentai.com/userfiles/files/12411946455.pdfIn PDF document text
    • http://xn--rssx31a7tec6p.com/upload/userfiles/files/20220319084705.pdfIn PDF document text
    • http://casms.org/atts/news-files/file/wagukejapitav.pdfIn PDF document text
    • https://zotujoku.weebly.com/uploads/1/3/5/3/135304148/pazoduwosaxesid.pdfIn PDF document text
    • http://klavierunterricht-bergedorf.de/files/files/sigoji.pdfIn PDF document text
    • http://ekonomiyonetimivepazararastirmalarikongresi.reklam.cc/FCKeditor/editor/filemanager/connectors/userfiles/file/10514615871.pdfIn PDF document text
    • http://a-aqua.fr/ressource/site-image/files/21799859571.pdfIn PDF document text
    • https://galofufe.weebly.com/uploads/1/3/1/3/131384583/8d41484b09.pdfIn PDF document text
    • https://apexsafetyproducts.com/ckfinder/userfiles/files/20483074145.pdfIn PDF document text
    • https://fisezofibidan.weebly.com/uploads/1/3/4/3/134316577/fololojigi-lukunebaw.pdfIn PDF document text
    • http://ladyvenus.it/userfiles/files/lefaxapapesebes.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA88 16292 bytes
SHA-256: 1c12ef919e78eddecb5ee7ad4b4bc910948c2309956e30257260a79fc11956a1
font_01_sfnt_off000104f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F4 10888 bytes
SHA-256: 2fcbd5d3253a8e2801c4e2fe0b19cd3389028143d933102e3e3ccd6e61f5edb7
font_02_sfnt_off00011e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E38 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1