Malicious PDF — malware analysis report

Static analysis result for SHA-256 b714f993914f3261…

MALICIOUS

PDF

73.6 KB Created: 2021-03-05 23:45:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c53d939e3cd4716597df7619609997fd SHA-1: c0fc3657cbb8e46b97a71cb880c3c246e3cd1d01 SHA-256: b714f993914f3261d3c4f8c850b180fd1ba939fb1ba647a6fa3423f240c1abe8
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing and trojan threat. It contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine results. The primary malicious URL identified is https://xezojetit.ru/wix?keyword=best+hiding+champs+hide+and+seek+minecraft, which is presented as a search result to lure users. No scripts were extracted, but the PDF structure and numerous external links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=best+hiding+champs+hide+and+seek+minecraft PDF link annotation
    • https://saletenabij.weebly.com/uploads/1/3/4/3/134339554/jolotakosada.pdfIn PDF document text
    • https://xokotenesuku.weebly.com/uploads/1/3/1/4/131438709/8804692.pdfIn PDF document text
    • https://kexezesokofu.weebly.com/uploads/1/3/3/9/133986719/mepifakituf_rimis_levos_surojiro.pdfIn PDF document text
    • https://bukivobiwizu.weebly.com/uploads/1/3/4/0/134097020/5880829.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/98256b9f-6820-4946-aa76-86162bfed9b9/47464550051.pdfIn PDF document text
    • https://be56f97b-0727-4a8e-a141-4155b83e75ac.filesusr.com/ugd/5034d0_f166bb884e2f4b26a52047ac4f26d19e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/180af0c3-a977-4a12-a377-789691919888/95643843470.pdfIn PDF document text
    • https://dd3528e8-ded0-4753-843e-0d3cb9f542e7.filesusr.com/ugd/4d6844_5f77fb59d64346079cff765240c8d3b2.pdf?index=trueIn PDF document text
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_d8905fa57b944d3d87784d87193199ce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/chiari_1_malformation_and_headaches.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/tupuvegazawoliwumutovidus.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/vezelemupowowumokug.pdfIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_2cfafdc75d6142cab2764f266bc0e8e1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f42d868-1d0d-4ee2-8124-0010f0a6e491/how_much_do_mechanical_engineers_make_with_a_masters_degree.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/nonosotepaja.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/lakers_nba_injury_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/68067748943.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/bernina_record_830_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/2473044849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2b764ef-7926-406c-adff-f6bf7cc011c4/harley_davidson_servi_car_trike.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE368 5648 bytes
SHA-256: 801ec1ddebfd001f0b88c6aef00eb4d031e36734d95ded377236a0089bf7c2f7
font_01_sfnt_off0000f67b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67B 10148 bytes
SHA-256: 5db1b8a5c996fde910a6e086c59e76d5bd7b303b1628965286a864181229992e

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