Malicious PDF — malware analysis report

Static analysis result for SHA-256 4412b39cb8d8248c…

MALICIOUS

PDF

96.9 KB Created: 2022-04-22 10:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 6ef50a2ac813208e0b30a7c6025edfd5 SHA-1: 71fd5928120f5b9f4a48006b819e742f4cbfe0cf SHA-256: 4412b39cb8d8248c63e417d9754c1007170fd87f22c4edaca12f7e5bce25942a
326 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 9

  • 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.
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://lovig.co.za/YmrXLWy8?keyword=snake_case%20naming%20style%20python%203 PDF link annotation
    • http://bananamusic.tw/uploads/files/202202230645304210.pdfIn PDF document text
    • https://moxoviwepikiwu.weebly.com/uploads/1/3/2/8/132814726/tenifufef-gudekebas.pdfIn PDF document text
    • https://zaroxirag.weebly.com/uploads/1/3/4/4/134457582/5240181.pdfIn PDF document text
    • https://kebiluxo.weebly.com/uploads/1/3/1/4/131455508/fejoxidarofuxobapem.pdfIn PDF document text
    • https://mupififidimob.weebly.com/uploads/1/3/4/2/134234858/sofotupaxaxavix.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2022-2-7/20220207180322436020.pdfIn PDF document text
    • https://pimipile.weebly.com/uploads/1/3/4/8/134883166/8387163.pdfIn PDF document text
    • http://www.jasolasia.com/image/upload/File/82243572891.pdfIn PDF document text
    • http://ambulatorioveterinariobubiniregini.eu/userfiles/files/89754760785.pdfIn PDF document text
    • https://norabemomo.weebly.com/uploads/1/3/0/9/130969424/fovud_romodulixomif.pdfIn PDF document text
    • https://zopujujowaki.weebly.com/uploads/1/4/1/3/141306455/8820537.pdfIn PDF document text
    • https://sitatovap.weebly.com/uploads/1/3/1/4/131438195/2054793.pdfIn PDF document text
    • https://losopaxirusegu.weebly.com/uploads/1/3/0/8/130813120/papilusapamufaw.pdfIn PDF document text
    • https://gedorizifoxe.weebly.com/uploads/1/3/1/6/131607240/xiresupejil_lozejopagu.pdfIn PDF document text
    • https://kepupumi.weebly.com/uploads/1/3/4/6/134616340/d8d1761dbcb.pdfIn PDF document text
    • http://saeronbio.com/userData/board/file/24666099201.pdfIn PDF document text
    • https://jiwosanoxonu.weebly.com/uploads/1/3/5/2/135299962/5905947.pdfIn PDF document text
    • http://atad.ae/emanager/assets/ckeditor/plugins/kcfinder/upload/files/mitozefilofekavazaka.pdfIn PDF document text
    • http://mykeelayurveda.com/public_html/userfiles/file/55617040465.pdfIn PDF document text
    • https://empezo.xyz/js/ckfinder/userfiles/files/61758465187.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_off0000fbaa.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000fbaa.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAA 17868 bytes
SHA-256: 9a3e433e352a9258065e18546ff81c0d2d2529c16c15e31077fe2ef03bdfa477
font_01_sfnt_off00012ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD4 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa
font_02_sfnt_off000140d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000158ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158ED 11208 bytes
SHA-256: 451a452b60100a5f0459c157d30dd17f87a8e93ffbe3867efa7b7c37976f25b2