Malicious PDF — malware analysis report

Static analysis result for SHA-256 51d5c8bc1c5db97d…

MALICIOUS

PDF

76.9 KB Created: 2021-03-23 19:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0f63050ad800caa4d59e1ce82b70eed8 SHA-1: 924444e757c0ded4f486d0b437eea64d34dce868 SHA-256: 51d5c8bc1c5db97dc6e703a1c36ce294c582084a2aaed7ff6a5a7cf701c8d9d4
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 0.9993

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://pelibifir.ru/wix?keyword=2011+mazdaspeed+3+service+manual PDF link annotation
    • https://zirubelazuzo.weebly.com/uploads/1/3/4/7/134747961/1ba4e06.pdfIn PDF document text
    • https://foxenaduro.weebly.com/uploads/1/3/1/1/131164157/kafefez-sofujinonedo-seboj.pdfIn PDF document text
    • https://firedilem.weebly.com/uploads/1/3/1/4/131407958/vedafilalagap.pdfIn PDF document text
    • https://piwutevuxave.weebly.com/uploads/1/3/4/8/134891910/darid.pdfIn PDF document text
    • https://tonavamajarow.weebly.com/uploads/1/3/4/6/134694337/faxape_jozuvozaxosa_bexowanesamuv.pdfIn PDF document text
    • http://monongzhlh.space/rukagiwedojuxojcv3p.pdfIn PDF document text
    • http://mignonette.space/shona_to_english184aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f00bf72b-ae87-4b6a-b104-401b3082eb4b/wedumaza.pdfIn PDF document text
    • http://zimunumiwu.epizy.com/78674874428.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/59380877619.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/22709983257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18d296d7-3852-4c51-a70d-40ab559f92b1/80943090879.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/acrylic_mirror_sheet_large.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/34833555731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/901e927c-cc8f-4df7-a0c2-7c2d500c0abd/98017411427.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/sataro.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/inter-tel_phone_manual_8622.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/lasko_48_in._xtra_air_tower_fan_with_remote_control.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/22335987892.pdfIn PDF document text
    • http://fibejebovef.epizy.com/is_the_bissell_powerforce_helix_a_good_vacuum.pdfIn PDF document text
    • http://tojulov.epizy.com/12436543429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cc78753-de4b-4b50-9916-725d870010be/tronical_tune_plus_type_a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bca4d4b3-65e2-4266-af98-09ee3cc20fbc/20598006947.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE68 5724 bytes
SHA-256: 58ea56cf93b7af19a5fad1bd13a5eaa08772a711bc7e0bf0ad79adb7fcc087c4
font_01_sfnt_off000101d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D9 10672 bytes
SHA-256: 4c15f99f7818fbac6c1397d9b372019902342516aa4d98d1dbb3e11d113f11c0

Open this report in the interactive analyzer, or submit your own file for analysis.