Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6219ff83c78e3c5…

MALICIOUS

PDF

85.0 KB Created: 2021-04-03 18:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 99b0642ad88e8603f45bdf01201a7b49 SHA-1: 5704c126eed505139ccdf0e2c70112e42904a801 SHA-256: f6219ff83c78e3c53590cac7c763ce917b5b585901e08a84dc663f72fa3d2669
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9994

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/award?keyword=posterior+tibial+tendonitis+treatment+pdf PDF link annotation
    • http://allwoman.site/2016_iihf_world_championship_winnerfuwe5.pdfIn PDF document text
    • http://gakurijaje.iblogger.org/andrea_pirlo_autobiography.pdfIn PDF document text
    • http://nat-fru.space/10109146396tga5o.pdfIn PDF document text
    • http://milesnires.xyz/51418536039gongn.pdfIn PDF document text
    • http://f1l3download.site/how_to_know_if_compound_is_molecular_or_ionic12s2s.pdfIn PDF document text
    • http://bogplaktnc.fun/soxuz29y09.pdfIn PDF document text
    • http://italywow.info/fofatelamidalar7qf41.pdfIn PDF document text
    • http://gadolokelijibus.iblogger.org/used_commercial_refrigerator_for_sale_near_me.pdfIn PDF document text
    • http://ejqy.com/porter_cable_plate_joiner_555_manualu0382.pdfIn PDF document text
    • http://classkaod.ru/boohoo_meme_funnypbky4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_a5be84831f02494b9d50d669836ad033.pdf?index=trueIn PDF document text
    • http://zejawira.rf.gd/96513503527.pdfIn PDF document text
    • https://2a6c20f5-091f-48b5-a5be-bf749919b1f6.filesusr.com/ugd/3794ad_5fafcb5f721e4f8493d536a22d06b044.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/seriposuj/43987463666.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/teloxudomepawoxusisubuxez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcf3cfbd-58d7-47e7-bd3e-444e7e1a87bb/20981929583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55ef2480-e27d-4214-8e48-2da935222175/32697508888.pdfIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_cc72a263c3c44fec9205d02888f8ec2b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/50aa7760-8f23-4094-9344-2797ac257e19/dlink_dir-655_default_ip_address.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/46955862414.pdfIn PDF document text
    • http://kikadunutifowew.rf.gd/lullaby_of_birdland.pdfIn PDF document text
    • http://bikawojesagoso.rf.gd/46653649115.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c2f8b15-9e4b-4d28-9d52-d19a4ab0d489/cisco_cli_cheat_sheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F76 5328 bytes
SHA-256: 9ed0cad2889dcd54f15f3cb927d78c9d4ff476682cd354213359468e0a532dcc
font_01_sfnt_off00012173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12173 10844 bytes
SHA-256: a5429c00aefd6767868cf63602c02a982207aabce0ee8eadd0f3ed6f96437369

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