Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03ecb0f1ec38af4…

MALICIOUS

PDF

75.0 KB Created: 2021-04-08 07:04:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4333ab0f1740b3b100568d10d72be6a1 SHA-1: 72b67a8bee5442ba0daf41ad76278dee9d59d29c SHA-256: e03ecb0f1ec38af4f86d9b2570d1b19822eb4095e1473e534ca756b8c1054b16
156 Risk Score

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=gander+mountain+guide+series+shirts PDF link annotation
    • https://dijizuwuke.weebly.com/uploads/1/3/3/9/133999270/lifanav.pdfIn PDF document text
    • https://jubekese.weebly.com/uploads/1/3/1/6/131606730/8924733.pdfIn PDF document text
    • https://cdn.sqhk.co/velomegu/iQhjTaD/the_crossing_church_columbia_mo_service_times.pdfIn PDF document text
    • https://gosasolana.weebly.com/uploads/1/3/4/5/134523876/sadasilenujev_bakalirud.pdfIn PDF document text
    • https://xulakuvoloja.weebly.com/uploads/1/3/0/8/130813987/nubavumolira.pdfIn PDF document text
    • https://cdn.sqhk.co/dipewoduge/cIoTliv/regulation_hockey_net_dimensions.pdfIn PDF document text
    • https://cdn.sqhk.co/nezuxada/PzYihhb/candy_legend_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/l2xuYhj/bluff_city_law_season_2_release_date.pdfIn PDF document text
    • https://nibasekugi.weebly.com/uploads/1/3/1/0/131070633/4126874.pdfIn PDF document text
    • https://bidopafogusiw.weebly.com/uploads/1/3/1/0/131070115/tosuvamitikediwe.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/fasudikek/openssl_aix_ibm.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/alchemy_meaning_in_malayalam.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/76029302254.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/kelefilut.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/what_does_the_us_constitution_say_about_voting.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/52314075392.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/how_much_does_wordpress_hosting_cost.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_off0000d90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90B 5120 bytes
SHA-256: cf6f88f2f3cb6b9691ff12e993eb8e31439b0f875c5c9ac5229841c8ed4b7d99
font_01_sfnt_off0000ea45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA45 11436 bytes
SHA-256: f73cfd2b38ca01b9e4728b0e70bacf26361fc892341641a910abe5f11adb6ebd
font_02_sfnt_off000110a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A4 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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