Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a2e14c9a51ca63…

MALICIOUS

PDF

79.3 KB Created: 2021-01-18 21:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6fd4a1531089b7de4fcfee3e3acfd315 SHA-1: 1967e1e628ce0e25bcda5a3f97960c064385250f SHA-256: e0a2e14c9a51ca63055058b8c959e4161bb5c26d672207af21f9ecfa1300acaa
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which point to SEO-optimized PDF hosting sites, suggesting a link farm designed to drive traffic. One prominent URL, 'https://jottigo.ru/123?utm_term=tortilla+flat+john+steinbeck+pdf', appears to be a lure, presenting itself as a search result for a book. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jottigo.ru/123?utm_term=tortilla+flat+john+steinbeck+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4372399/normal_5fcc525975197.pdfIn PDF document text
    • https://dodilepu.weebly.com/uploads/1/3/4/4/134444379/nuvozomexezam_vuzojipadelal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376125/normal_5fdcd0092c8c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478378/normal_5ff385724050a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5f8b3d4981a3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368224/normal_5f8ae65d2f411.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384464/normal_5feef70d58ae8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415527/normal_5fc3fe615bfa9.pdfIn PDF document text
    • http://nokutanebufevon.iblogger.org/nikodepudixodowamowo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476429/normal_5fb416dfb2488.pdfIn PDF document text
    • https://wugemevafiditi.weebly.com/uploads/1/3/4/3/134382928/5801279.pdfIn PDF document text
    • http://jigitozunawada.66ghz.com/video_editor_android_apps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424036/normal_5fa1509429b01.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/kawotexulozax/14932519525.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/kanye_west_owes_me_300.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/putugusetir.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/smoke_on_the_water_trombone_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/avakin_life_hack_apk_1._027._01.pdfIn PDF document text
    • http://kavisawadafo.epizy.com/91577982934.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/69276361097.pdfIn PDF document text
    • http://dowijasimenazo.epizy.com/chess_rules_the_ultimate_guide_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/anexion_de_chiapas_a_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/14411450973.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_off0000ea94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA94 5260 bytes
SHA-256: 217062f15b8ac979e578228ce6590b68d8e86361a02fd0130cab9b954a8f9f2e
font_01_sfnt_off0000fc5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5C 11112 bytes
SHA-256: 7a28fd4cbf1aef299b3c5da8bb046aa8aa28607b96ad439e27d1e6088c7a387a
font_02_sfnt_off00012107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12107 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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