Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b77830eee4c2a19…

MALICIOUS

PDF

66.6 KB Created: 2021-03-19 16:58:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0b21e91e163d73473db41bfdb61c466 SHA-1: f105091f9229eebedfe35bcb56e028eca7dba83b SHA-256: 0b77830eee4c2a1960171c7f7f5802e926cdf173502c0fa06c7cb09333485a18
124 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with a primary suspicious URL pointing to 'xezojetit.ru'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. Although no scripts were extracted, the presence of external URIs and the ML classifier's high confidence score support the classification as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7003

Heuristics 4

  • 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
  • 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/aws?utm_term=dark+heresy+ascension+character+sheet
    • https://cdn.sqhk.co/xakelafu/eFhbjdM/navukofawuragaga.pdf
    • https://cdn.sqhk.co/pixefavenar/0I2jiii/paytm_recharge_net_banking.pdf
    • http://videohost.space/karnataka_election_live_reportkwec1.pdf
    • http://azalea.store/prepositions_of_place_exercises_with_answersmj9xp.pdf
    • https://zoguripan.weebly.com/uploads/1/3/1/0/131070442/9286620.pdf
    • http://liketsven.xyz/wexurisixegejotejigawjkvn.pdf
    • https://sidafixeruj.weebly.com/uploads/1/3/2/6/132681612/dujofidijosuralo.pdf
    • https://talipugetajizan.weebly.com/uploads/1/3/4/8/134862074/sexujoxez_govifaxilewegex_dewaxosupeko_sadefikuzaw.pdf
    • http://kamini33.ru/90082161771vo5mc.pdf
    • http://fibufadal.iblogger.org/board_exam_date_sheet_2020.pdf
    • https://cdn.sqhk.co/dovawowo/L9Tgdjf/27621382730.pdf
    • http://wrinklestiltskin.com/72866733588u0zk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jikopot/fumufutisesisu.pdf
    • https://s3.amazonaws.com/bededuxotulapil/terivadijofipoforadubuti.pdf
    • https://uploads.strikinglycdn.com/files/fd2abcb1-4625-427c-968f-bc6b426d9ca3/shl_verbal_reasoning_practice_test_answers.pdf
    • https://s3.amazonaws.com/gekixadonuru/standard_of_excellence_book_1_trumpet_jingle_bells.pdf
    • http://lasarogime.rf.gd/98319103488.pdf
    • http://jovuwumadileweb.rf.gd/52567818892.pdf
    • https://uploads.strikinglycdn.com/files/3818742d-a514-4c7a-aede-29df6f4b24b4/how_many_magic_tree_house_super_edition_books_are_there.pdf
    • https://uploads.strikinglycdn.com/files/384a1485-0a43-46b8-b60b-eb04e3959ad0/what_are_the_12_types_of_tenses_with_examples.pdf
    • https://uploads.strikinglycdn.com/files/df4af1e9-4838-4821-8918-0126309547e6/mevisosefowawosomit.pdf
    • http://pekufupudemolor.epizy.com/chauffeur_uniform_dubai.pdf
    • https://uploads.strikinglycdn.com/files/8d511c92-b63d-41de-86f0-9e8cf2681a7d/rizez.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5c7.bin
73c0485bdddfe481d94ff1ac277aece49d9b36a35adfea4ceb402091f049adac
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C7 4808 bytes