Malicious PDF — malware analysis report

Static analysis result for SHA-256 c324637e811a6278…

MALICIOUS

PDF

82.1 KB Created: 2021-03-14 17:04:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 10d1c987de7deff0a6b3fb237b67274b SHA-1: 9c662143fa3f5978157fae03ff599a486b0ae3ee SHA-256: c324637e811a6278f22e03591f4c519ff9735b61c96dce7b4e8b1a5e34129c05
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 0.9993

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://crophysi.ru/123?utm_term=neurocysticercosis+treatment+guidelines PDF link annotation
    • http://bezufasenifeni.22web.org/chemical_test_for_alkaloids.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/lhhuNgf/bts_dynamite_lyrics_az.pdfIn PDF document text
    • https://cdn.sqhk.co/losegiro/igghdha/68053258501.pdfIn PDF document text
    • https://cdn.sqhk.co/bifoligi/jclShiZ/90162824351.pdfIn PDF document text
    • https://cdn.sqhk.co/rudixika/vVgdKwt/trainheroic_app_review.pdfIn PDF document text
    • http://guvizaw.22web.org/bedubudu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/arma_3_exile_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d03f55d-bf6e-4e8b-8abc-e6ccd9e4f111/bemotuxevojibitokot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e92e8f6a-0e54-476c-85d0-2e624d7cde24/83009194442.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/nature_wallpaper_for_jio_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/saxufogazezikajuveboze.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/vagibula.pdfIn PDF document text
    • http://dasupepu.epizy.com/g_shock_tough_solar_replacement_band.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d67e24b-63ac-4231-9fef-9110155ab943/78513681784.pdfIn PDF document text
    • http://wapudajikipidem.epizy.com/r_markdown_presentation_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/xerajife.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/xafuguwumoguxopowoduxuler.pdfIn PDF document text
    • https://b3079848-b07e-4d89-9244-05dfa5dd91fe.filesusr.com/ugd/3ab5ed_625ca5c9c8a949238d58958d2f9efa21.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/workers_compensation_board_forms.pdfIn PDF document text
    • http://vodewalipovonu.rf.gd/67089214021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cc152b4-6892-4d33-9d1c-47bc36b55586/famur.pdfIn PDF document text
    • https://6478d21b-237c-41b5-add8-96d7b9819624.filesusr.com/ugd/c7ef1a_cfe73a4271a54477a9a534ab310f5cb6.pdf?index=trueIn PDF document text
    • https://aabf49e0-5477-4fd2-8456-a986ef8f2a87.filesusr.com/ugd/9e14ca_be917df79d154a04a759c3c26a32fe2e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sedowedi/bopexukijipudetukudazef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d9bd8c-575d-4f73-82d5-1f4ba01cea63/19521918662.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_off0001023e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023E 5328 bytes
SHA-256: 099a07068aea2c31b4d80635a4edf8c893ebb7820b186ff15e05849e457961dd
font_01_sfnt_off00011454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11454 11292 bytes
SHA-256: c4111946878dfc683b006c3e8ea3510a7d3b1b233b24fa467294dacd9f65f92b

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