Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61e0dd37a942d8f…

MALICIOUS

PDF

111.4 KB Created: 2021-04-05 23:30:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 549bae121cfd68c69f4df8da5dde46b4 SHA-1: 6423c35db58ed61ab9bad11f8348b12f26f51eed SHA-256: b61e0dd37a942d8fc0db9c14e374e8835914fcc9bc805271e9bd039f76544118
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for distributing further malware or phishing content. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=yamaha+ysp+2200+manuale PDF link annotation
    • http://idealicaitalia-ufficiale.site/is_nesquik_strawberry_milk_good_for_youtoi8e.pdfIn PDF document text
    • http://damita.fun/alienware_17_r2_user_manual6hsr5.pdfIn PDF document text
    • http://bumosid.getenjoyment.net/21848527739.pdfIn PDF document text
    • http://xebubux.sportsontheweb.net/61341881529.pdfIn PDF document text
    • http://all-system7.work/fallout_4_companions_react_masterlistxu0bt.pdfIn PDF document text
    • https://sorimuzumetig.weebly.com/uploads/1/3/4/5/134519591/519e8a1c63bf70.pdfIn PDF document text
    • http://uspeh.icu/tuborasivuxukenogekulebaf4ygn.pdfIn PDF document text
    • https://kodavagimiwebod.weebly.com/uploads/1/3/5/3/135346487/4193025.pdfIn PDF document text
    • https://segoluremu.weebly.com/uploads/1/3/2/7/132740478/bujonaxipopotiw.pdfIn PDF document text
    • http://momentikshop.space/char-broil_4-burner_propane_gas_grill_with_side_burner318xc.pdfIn PDF document text
    • https://guvikaki.weebly.com/uploads/1/3/4/5/134519546/ratizefizuwe_kogigakeg_meneboxebo.pdfIn PDF document text
    • https://lufukosiresefo.weebly.com/uploads/1/3/4/7/134707539/075c1153de97ac.pdfIn PDF document text
    • https://lasapiboxemifol.weebly.com/uploads/1/3/4/8/134865682/patali.pdfIn PDF document text
    • http://ruwufuwetoj.mygamesonline.org/63742349365.pdfIn PDF document text
    • http://bigezidara.mypressonline.com/median_nerve_gliding_exercises.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://37459de8-d961-4a2a-897a-801dad55dcfc.filesusr.com/ugd/1395e2_2ec0adbaa1b34a30b08a57b913ba4998.pdf?index=trueIn PDF document text
    • https://feedbc21-cb93-402c-9ae2-3476589645d2.filesusr.com/ugd/f3ecbe_4fea8f785f85439eba1a7ccaed01b3e0.pdf?index=trueIn PDF document text
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_c762e06a5d9644c983232fb5d1cd8a1a.pdf?index=trueIn PDF document text
    • https://aa6d2f86-95e2-42cc-897e-6bbd71c3a116.filesusr.com/ugd/78daac_8475dedc19cd4bac8daa8e372550be92.pdf?index=trueIn PDF document text
    • https://0502d5d0-a0f5-47b8-bc1c-644c46e4e431.filesusr.com/ugd/6cabbb_9327f0933ac542469a7d0226404e327e.pdf?index=trueIn PDF document text
    • https://36fc1fe3-b646-4cc1-b6e9-de51469aea27.filesusr.com/ugd/3eb4bd_bb91d5d843734710b90642841f86ca78.pdf?index=trueIn PDF document text
    • https://d0aee4dd-c5bf-4c29-adcf-3aa844f59ef3.filesusr.com/ugd/193d13_47a12caad373445b9dfd6264cacea231.pdf?index=trueIn PDF document text
    • http://moxosutemow.onlinewebshop.net/73012720181.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://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F94 4944 bytes
SHA-256: 1afa4437a61a4825166009bb9a24600fdc65493d775ca40890b97fe950061b81
font_01_sfnt_off00014034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14034 11244 bytes
SHA-256: 5142164a43c41e8081ef9701c6d863c601d8fe3f59013466197a8c82e949467a
font_02_sfnt_off00016021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16021 12364 bytes
SHA-256: e97459c4fef060b0b6d142f7e76d35ae896356ec67e6aec4ad7864d7f7fe2272
font_03_sfnt_off000189bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x189BC 16248 bytes
SHA-256: 2ffe0065ad8a4efff0e8f9db3fffdc285a08b07fe6b7db3d69aed5e68b96de1f
font_04_sfnt_off00019f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F0E 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230