Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d62fe73bb1693e4…

MALICIOUS

PDF

72.6 KB Created: 2020-12-10 03:44:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dc279958918a297213974c69574ab779 SHA-1: 160e7ec36ee34f30862046f3aac9763c16bff84e SHA-256: 0d62fe73bb1693e4fdde3150c3494a8a12d0f7bb2a9a51e6a9085f59252a4b45
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffset.ru/123?utm_term=malayalam+movie+my+boss+actress+name PDF link annotation
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/vinoxisuwar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f949e78430c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://static1.squarespace.com/static/5fc0baae3dfdd95b60d439b1/t/5fc2b20d9b1ed0353834f380/1606595087815/63709061370.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/24877065808.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/russian_english_bilingual_visual_dictionary_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57951239b0722915020fe/t/5fd038ed5ec17a4c668a5281/1607481582288/papino.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc294d0bda9c57a97c8e281/t/5fc3e0566457125654b2eef6/1606672470741/logitech_harmony_ultimate_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/83774902818.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/xabijijuxeburevizidupo.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/car_loan_amortization_calculator_excel_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce2f7b08bb286b7fcda3d5/t/5fd16e37880fa23343c8a4bd/1607560760432/mevekawawawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4b7e3bf-8a98-4787-b195-a3719280452b/world_war_heroes_2_cheats.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e8ef2bbd740658068d75/t/5fcdd2d5f94b6402b23bb886/1607324374110/pudedakagelapu.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/blenheim_palace_annual_pass_application_form.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C3 5252 bytes
SHA-256: cdc650a7c630187294bf68b061627a855c07e5dd2e3fb6ce15f769fdd7c27b26
font_01_sfnt_off0000e398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE398 3500 bytes
SHA-256: 19a5d532a84ab10346aabd896c246d55b272e4264f974dc7c270018b2e1a75b3
font_02_sfnt_off0000f0b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B6 10712 bytes
SHA-256: 300726062846ac7e46db3dcc7ecaa2eabf1a0c948ce440280b1cac42b4dafd1e

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