Malicious PDF — malware analysis report

Static analysis result for SHA-256 36041405b26697a0…

MALICIOUS

PDF

87.8 KB Created: 2021-04-06 23:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47e05a4579d349ac2dbcf445fec19aba SHA-1: b4b30de99938faa4fc45bfd7ceb0c50a9fc7d2df SHA-256: 36041405b26697a0ab930cee68acfcf413c0485f633062dbf5abe5393bb7a2be
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to distribute further malicious content or phish users. The document body, though heavily corrupted, contains references to 'Arabic vocabulary for beginners pdf' and 'wkhtmltopdf', which appear to be lures to disguise the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/123?utm_term=arabic+vocabulary+for+beginners+pdf PDF link annotation
    • https://s3.amazonaws.com/nabifovu/knights_and_dragons_armor_stats_spreadsheet.pdfIn PDF document text
    • https://bivapere.weebly.com/uploads/1/3/4/6/134689139/f68b20a6276cda8.pdfIn PDF document text
    • https://zilavexeredora.weebly.com/uploads/1/3/0/8/130874610/zotujinunudul_sijesowopaxi.pdfIn PDF document text
    • https://fetevemukimagon.weebly.com/uploads/1/3/4/8/134896640/1fe82871c5.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/luzivuvojevasi-nusepewoveb-dirosoxe.pdfIn PDF document text
    • https://nezuwiwobitedut.weebly.com/uploads/1/3/4/6/134600585/77ad22ee.pdfIn PDF document text
    • https://wazurewimi.weebly.com/uploads/1/3/4/5/134598950/94a6d.pdfIn PDF document text
    • https://letazofuwukuge.weebly.com/uploads/1/3/4/8/134869061/kojeputugux-sovemesupovidut.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/69032419294.pdfIn PDF document text
    • https://nironaguvotu.weebly.com/uploads/1/3/4/5/134530025/wizixojerevixiwejaju.pdfIn PDF document text
    • https://gebiralegesexi.weebly.com/uploads/1/3/0/8/130814020/rajaru-wipal.pdfIn PDF document text
    • https://fimupekegu.weebly.com/uploads/1/3/4/5/134502303/9887612.pdfIn PDF document text
    • https://pazovazorukilaz.weebly.com/uploads/1/3/4/6/134673506/gagowefalodil_pugagonixurojem_gemamexar.pdfIn PDF document text
    • https://tuwoganerolet.weebly.com/uploads/1/3/4/6/134631505/senugiminavab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d0fd53c2-66a5-49f7-a942-a4bfc50892a3.filesusr.com/ugd/11baf9_067f2568647745e8822dc4dbe4e49b90.pdf?index=trueIn PDF document text
    • https://e1cd7dcf-8988-4be8-9b1a-722367337987.filesusr.com/ugd/6203b9_fb5a0507bf264bbcb1f5345942d60239.pdf?index=trueIn PDF document text
    • https://b7d3a0ae-8059-487b-8826-088776693174.filesusr.com/ugd/8d23e4_6b9b716311b643f7b17774b74e72f076.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54A 5616 bytes
SHA-256: cb199dc89648047c570285cfb091f79f24e87788dde2082d889d819970921866
font_01_sfnt_off0001087e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087E 3056 bytes
SHA-256: 251a2f4f4c4a76381eb99f81b8648b9923d8c9317ec4c29863ad6115ea680532
font_02_sfnt_off00011552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11552 10844 bytes
SHA-256: 0047d2b1435969806203e94fa823f5e7ac1634f458a4ee2d553ecd4059bd8b3e
font_03_sfnt_off00013aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AA4 16088 bytes
SHA-256: 55ee31f2b9c575572aca401957c5cf2f3b57b55b1dd57d1bb6d1e144d3512b41