Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b33a63afa0f53e…

MALICIOUS

PDF

75.2 KB Created: 2020-11-18 02:48:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2ada31bf74aa8a30aea14c5284c0c538 SHA-1: 94da4d2be3062aa8e6b24992f13aaa2f7a92fb24 SHA-256: d0b33a63afa0f53e1505214e0ac5c9f9241733b92980dea544709ae9c4cba0a2
222 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, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/123?utm_term=fluent+python+2nd+pdf In PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/8467407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452865/normal_5f9f100e5892c.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/wokuvanugaviz-muwetubumopu-nokebumuxu-nupal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388420/normal_5f9f154d54333.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/felomasige.pdfIn PDF document text
    • https://setisobizosepi.weebly.com/uploads/1/3/4/6/134670504/4716689.pdfIn PDF document text
    • https://fagozeku.weebly.com/uploads/1/3/4/5/134506452/bupadoso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386365/normal_5f90564e1d38c.pdfIn PDF document text
    • https://kumupesefutevun.weebly.com/uploads/1/3/4/4/134463509/6191880.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/buruvopuvarovikofojigo.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/ge_nautilus_dishwasher_parts_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/10898538827.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/unblocked_games_66_slope_ball.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7C 3064 bytes
SHA-256: 853f993b97a6ef13d4f33c44dfeffc31ef2e0f71392b5230c63e5a4a03543fb2
font_01_sfnt_off0000d847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD847 4832 bytes
SHA-256: 4e300958bc10f05a42bdccefc5caa842194cdae31afaffc6ab87d7e91695ebd6
font_02_sfnt_off0000e8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C4 3804 bytes
SHA-256: c7e067ad9ac53cc797ddb25e4145fa48c8bb0ccbe9ea71ac0675d2b11187de12
font_03_sfnt_off0000f7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AE 11496 bytes
SHA-256: f725b022fa804cdaabbb90cf22e0be551a81541cd63fb938e7b8e32571bc2cc8

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