Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be30bc12f1d08c8…

MALICIOUS

PDF

74.1 KB Created: 2021-06-05 17:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4b55089d13b2c6323d656b76b5476cdd SHA-1: e54d5420e0a69696159403968b0cbd8d73c56406 SHA-256: 9be30bc12f1d08c8354fefc77d754b11b9d091cd117ea3ce2c37dde331fc5c1b
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 0.9997

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 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://queure.ru/pbw?utm_term=lg+g7+thinq+android+10+kdz PDF link annotation
    • https://xisagoruno.weebly.com/uploads/1/3/5/3/135332800/8314238.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_5fdbb466bc9e7.pdfIn PDF document text
    • https://fazapezipomen.weebly.com/uploads/1/3/1/4/131453522/733d245a1.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4490365/normal_60b1915767bcc.pdfIn PDF document text
    • https://nebelifufenav.weebly.com/uploads/1/3/1/4/131437331/fajaxufejaxebi.pdfIn PDF document text
    • https://getedizexagan.weebly.com/uploads/1/3/0/7/130740146/afbc6f10c21b3c7.pdfIn PDF document text
    • https://bavoramexur.weebly.com/uploads/1/3/5/3/135326869/c44160fae5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406482/normal_603f8e9e2a761.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gogoporiwo.pbworks.com/w/file/fetch/144464784/abbyy_finereader_crack_version.pdfIn PDF document text
    • http://nolumemonip.pbworks.com/f/darokerudurow.pdfIn PDF document text
    • http://luwapoveduvi.pbworks.com/f/how_to_bind_traxxas_tq_remote.pdfIn PDF document text
    • http://kelivesas.pbworks.com/f/54668895089.pdfIn PDF document text
    • http://finebov.pbworks.com/w/file/fetch/144472839/what_are_unvoiced_sounds.pdfIn PDF document text
    • http://gonumutat.pbworks.com/f/printable_jack_and_the_beanstalk_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49e3a40d-7377-407b-ad39-f7718b4182e0/troy_bilt_pony_tiller_drive_belt_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/021ba7ef-b161-4e44-8370-a93133b9ff6e/kukupix.pdfIn PDF document text
    • http://xizisimavi.pbworks.com/f/enrique_iglesias_-_bailando_english_ft._sean_paul_mp3_download.pdfIn PDF document text
    • http://tukufidanega.pbworks.com/w/file/fetch/144422451/juvixiv.pdfIn PDF document text
    • http://mumubib.pbworks.com/f/89852375462.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba98d730-92d8-4f3b-b7b8-e6070834f90c/58921288444.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_off0000e383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE383 5332 bytes
SHA-256: 23fc57cefd889210caa1e7d096e0817cc97f2070c6514bb00265ea85d68e4751
font_01_sfnt_off0000f5b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B1 10924 bytes
SHA-256: 7c1b9ec2432ecb66bfb9666014821ee4bf7cd7516e96e39b4dc2a2a13e7c857c

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