Malicious PDF — malware analysis report

Static analysis result for SHA-256 965f9a43a1c0c9c2…

MALICIOUS

PDF

75.4 KB Created: 2021-02-28 15:03:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8572484df24bf97d88d65989b9352edb SHA-1: 9cfe135fbbf7fc03073f490af33420453a08674a SHA-256: 965f9a43a1c0c9c2f0575ea8d43f140f17d66b900273caa31f04d5ab5a844d78
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://xajibur.ru/wix?keyword=john+deere+1130se+snowblower+parts+manual PDF link annotation
    • http://umkatrade.ru/wugigevufukwhj2.pdfIn PDF document text
    • http://bitcoins-profits.com/monuboguvototozapejegsu5x3.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/eiihjjg/reversionary_estate_singapore.pdfIn PDF document text
    • https://pexajutamog.weebly.com/uploads/1/3/4/7/134759810/2616891.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416935/normal_5fc5c7b7e1425.pdfIn PDF document text
    • https://kivasemav.weebly.com/uploads/1/3/2/6/132680863/valuragirawusur_jusizemukalu_bopofabubawib.pdfIn PDF document text
    • http://gayerkan.com/extra_questions_of_chapter_acids_bases_and_salts_class_10z9854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410462/normal_6013b59914e3a.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/how_to_clean_drum_of_top_load_washing_machine.pdfIn PDF document text
    • https://vukexelisijaka.weebly.com/uploads/1/3/1/0/131070195/sugejiwitibel.pdfIn PDF document text
    • http://repair-foto.ru/7480043690936ac6.pdfIn PDF document text
    • http://oneitshop.info/81718099648wu68t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393193/normal_60211668cdcdf.pdfIn PDF document text
    • http://good-production20.site/ludijis6azgr.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/wiluzaritizokazeti.pdfIn PDF document text
    • http://sale50.pro/waxodrwdqg.pdfIn PDF document text
    • http://bandalet.club/lopepododisezibaqf3id.pdfIn PDF document text
    • http://replyua.site/fezumavanry35n.pdfIn PDF document text
    • http://bitjoms.xyz/princess_diaries_3_book_seriesh2kbl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393363/normal_5fed453b910a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/how_to_turn_off_schedule_on_trane_thermostat.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_off0000e8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F9 5776 bytes
SHA-256: a46e8d96ea881342297ee0a236813611a8bb06707a2632046d9a4a4ecf438b8f
font_01_sfnt_off0000fc83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC83 10440 bytes
SHA-256: f3a1c862030233e82e9b44a3cacfb9141fd49e537ad50f117c5a231f4b58162b

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