Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5da6529dc422c75…

MALICIOUS

PDF

69.5 KB Created: 2020-11-19 04:12:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2bbcd64fa8468990600ccd080cecb6f6 SHA-1: d822e6018f6ba106bd7ae7cb30daf98312745700 SHA-256: c5da6529dc422c7542eb27ae2a177970b49500a34c764497f4f77509998b357c
214 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 and routes users through malicious redirector infrastructure. 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
  • 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.
  • 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/strik?utm_term=hino+268+service+manual In PDF document text
    • https://zudovizu.weebly.com/uploads/1/3/4/3/134338339/bepigebixojuger.pdfIn PDF document text
    • https://zoliparudoluja.weebly.com/uploads/1/3/4/6/134662317/tusozepumeramobujex.pdfIn PDF document text
    • https://fipaziditude.weebly.com/uploads/1/3/4/4/134465794/4695768.pdfIn PDF document text
    • https://zoropafe.weebly.com/uploads/1/3/4/3/134374448/cff7612.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/xiriruvumojupax.pdfIn PDF document text
    • https://fogujudusimasob.weebly.com/uploads/1/3/4/7/134713994/f04f26.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0599c4cb-259c-45a5-b062-1923c61042f1/61708002539.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/8717998105.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/4028501315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d4057b-c47c-4c82-a171-a5008dc76c37/sijubobidu.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiwovowus/smart_couples_finish_rich_free.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/22711918303.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0347886a-9f40-4d69-9eac-2c3270ae8ef9/image_de_loup_a_imprimer.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/powevofonanaxatefa.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/saxon_algebra_2_solutions_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4C2 5248 bytes
SHA-256: bee76f877fcd21b70883d4ef6dc0c604d90e900e83dadfae40672a491aa00dbe
font_01_sfnt_off0000d667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD667 10776 bytes
SHA-256: f0a73e57ca6e0924ed27672ca9c63bcfdb566382657569ce4fc641416ca95556
font_02_sfnt_off0000fadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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