Malicious PDF — malware analysis report

Static analysis result for SHA-256 627fd30aadeab131…

MALICIOUS

PDF

70.6 KB Created: 2020-11-26 09:20:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 00a3226e1fbd45fe513e2520b5c82d8d SHA-1: 2e333c7476542b5e024d6bf62c58fd3749bf5062 SHA-256: 627fd30aadeab1318f0385623ecf8961934893a295588ee85f86625271923dcd
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/strik?utm_term=dog+named+ben+franklin PDF link annotation
    • https://xataramev.weebly.com/uploads/1/3/4/3/134320843/bedijenutowulixa.pdfIn PDF document text
    • https://fijefozumomaba.weebly.com/uploads/1/3/4/4/134491855/c0ad8c3443aba.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://s3.amazonaws.com/dutimajizowa/murray_m2560_weedeater_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/83529011976.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/lawaxeki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92234572-2b9a-49ef-8a86-9d6c1ad7d6e6/3674551879.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/plantronics_voyager_pro_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/zinedatagufipetiwakinaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09092e97-1c40-4bca-a599-ebea68b93ff4/33242431743.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/iit_bombay_internship_2019_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f636b656-9988-44f6-971b-d57140f24e1b/aldebert_quand_tu_seras_grand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a54e544-1e7d-47ab-819d-1604f7d43dca/47555138888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5d34d6c-97a3-470c-ba13-04d349944696/blink_to_speak_book.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/fremont_esl_adult_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15adab1d-16b5-4e5c-a770-2ceefd22c5af/56736534958.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_off0000ca9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9A 4960 bytes
SHA-256: 281fa62985dfd7808c65196e18ed9b796d1bbda7eecb31165394078ce8c3c5ed
font_01_sfnt_off0000db5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5C 10672 bytes
SHA-256: 669b338b313800277e53e3dd1ff39c7667a3b7279e10ee369d675def2425d2d3
font_02_sfnt_off0000ffc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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