Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7c5d1b4999f6e0…

MALICIOUS

PDF

80.9 KB Created: 2021-03-03 20:18:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 07f0eac99f7cb38ad3e4595736dfc2d6 SHA-1: 3c61867ff4269c43d746245c647352abbfe5360b SHA-256: db7c5d1b4999f6e0ecfec04c715d80b171e9e1e59e11687200ee4dd1e73dcc95
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 0.9996

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://gimoguvi.ru/123?utm_term=list+of+articles+conjunctions+and+prepositions PDF link annotation
    • https://narufana.weebly.com/uploads/1/3/4/6/134653256/nurikowulofuwoj_nodad_vuzixores_xebosodukibel.pdfIn PDF document text
    • https://wosowabo.weebly.com/uploads/1/3/4/3/134340570/6ab64a511.pdfIn PDF document text
    • http://24goodstore.site/samosakeci4fq.pdfIn PDF document text
    • http://ig-socialmedia.xyz/15769070409se2lo.pdfIn PDF document text
    • https://zekaxuwamawebi.weebly.com/uploads/1/3/5/9/135961115/9578418.pdfIn PDF document text
    • http://uscarins.info/oops_concepts_in_java_with_simple_example_programs27wcn.pdfIn PDF document text
    • https://bobifadilow.weebly.com/uploads/1/3/5/2/135295989/tugapubam-temajezulum.pdfIn PDF document text
    • https://fizinizaboz.weebly.com/uploads/1/3/5/3/135304720/38d07e.pdfIn PDF document text
    • https://xilaperuzu.weebly.com/uploads/1/3/4/3/134362480/kakirufilubor_pikoda.pdfIn PDF document text
    • http://sadovik.me/23217048744zlczt.pdfIn PDF document text
    • https://faboduvo.weebly.com/uploads/1/3/5/3/135343103/d567e65.pdfIn PDF document text
    • https://wigewowatabosaz.weebly.com/uploads/1/3/4/3/134352056/1249436.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/tikofaketonub/tirivutozekositamerase.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/14726222913.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/nobog.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/77856191569.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/ethnographic_research_articles.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/mamma_mia_2_andante_andante_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/jungle_movie_2019_movies_counter.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/73508385289.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/74507289503.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/41239160353.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_off0000fd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD82 5164 bytes
SHA-256: 91d48a3b2c3d2704f6d7307e4412edc027dcfd90f0efd06d432e111d74f7936d
font_01_sfnt_off00010f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F31 10776 bytes
SHA-256: 60f0b407682f728ee4a130b351dcb82427aeaf9858daeaabd22e720233fa23d0

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