Malicious PDF — malware analysis report

Static analysis result for SHA-256 b555bd095b70bc18…

MALICIOUS

PDF

115.8 KB Created: 2021-03-01 15:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2a00dd516386b1b442badc568eb17a78 SHA-1: 15a5ce9469801e327e6f91996726cda62a9c45ad SHA-256: b555bd095b70bc18628a746ad31a323b0c14ab82d9f3f849eea8f46088652427
196 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which point to SEO-optimized PDF files, suggesting a link farm for phishing or SEO manipulation. The primary lure appears to be the URL https://botokaw.ru/strik?utm_term=what+does+bangle+mean, which is identified as an SEO redirector. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://botokaw.ru/strik?utm_term=what+does+bangle+mean PDF link annotation
    • https://pisukobuvasojab.weebly.com/uploads/1/3/4/3/134398412/21fae.pdfIn PDF document text
    • https://piwomokoxik.weebly.com/uploads/1/3/5/3/135335333/f075d5e.pdfIn PDF document text
    • http://bivaxosufuxibo.mygamesonline.org/what_are_rhetorical_devices_in_literature.pdfIn PDF document text
    • http://rosutob.getenjoyment.net/lord_of_the_flies_book_review_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473902/normal_60368fde104eb.pdfIn PDF document text
    • https://wepebajaka.weebly.com/uploads/1/3/4/5/134588919/2f4ec.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/xotefimujodugidupabo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/dhaani_chunariya_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/76540240460.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/21539737291.pdfIn PDF document text
    • http://donolipapaxe.rf.gd/96438661767.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/functional_tester_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/what_is_the_ideal_temperature_for_smoking_meat.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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 11

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_011_off00018503.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18503 19456 bytes
SHA-256: 371f78a912c80421f99ee1bc6a19281c838985b307a1b582be36a4e34450891a
font_00_sfnt_off0000f44c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44C 3544 bytes
SHA-256: 92dc7aa84667982cf73bec7beba8c4a1dfd4e25429e8edbf51767237180c2efd
font_01_sfnt_off00010107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10107 5296 bytes
SHA-256: ff306df76c64af31caa9a8f4d06bf0b8685d755eae862a85463492bfe06284f4
font_02_sfnt_off000112ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112EE 3820 bytes
SHA-256: f5d2641e5ee298c94d63698b8ac1b21387387b2d502b4922ed5b5fb93e4028c9
font_03_sfnt_off00012148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12148 4572 bytes
SHA-256: 0da20b4e825969997c91f0e1f21741d423729f86d3ebc24ff2695b62f398aa14
font_04_sfnt_off00013019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13019 2960 bytes
SHA-256: da27f4ca566b757b883195d660e43a0fc12883178ddbab91d66654cb9e9905da
font_05_sfnt_off00013c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8E 2728 bytes
SHA-256: 9706bbefffde48738416c5f3fe764b3c215be2ad0af319ed503a7b18dac13d71
font_06_sfnt_off00014826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14826 4152 bytes
SHA-256: c6367f3e93f6f0d016e71d8626d70448bf6523c882dc31e9fc6879e5b53742e6
font_07_sfnt_off0001552e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1552E 16144 bytes
SHA-256: 2c276d549207735feeca846ed6211fdd836b228ba3f6ccca513dae8cfb0287a2
font_09_sfnt_off0001a424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A424 3492 bytes
SHA-256: ac719f8ec72f8194ce6edc3e743161a6352a7b736326dd49c946b785fca998b0
font_10_sfnt_off0001b17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B17A 2512 bytes
SHA-256: 8229b12f64de4013ddb0ccc31ad97e6edfbea4afba6d9fb482dbbce82819a850