Malicious PDF — malware analysis report

Static analysis result for SHA-256 75975734a42c3f0b…

MALICIOUS

PDF

101.9 KB Created: 2021-02-21 17:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a57153c46ef252dec086ba4448baffaa SHA-1: 76879a5d14f895628657fcc94dba98fcec67d1e0 SHA-256: 75975734a42c3f0ba1b796cc0705666305e03958bfdb7a00c663813d4c1b1f86
166 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with one specifically pointing to a suspicious domain that hosts a PDF file. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a family tree, which is then used to redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://bologen.ru/strik?utm_term=francisco+v%25C3%25A1zquez+de+coronado+family+tree PDF link annotation
    • https://bireguvax.weebly.com/uploads/1/3/0/7/130775683/dodesubef.pdfIn PDF document text
    • http://blockhcain.host/mercedes_glc_coupe_250_performanceaou6s.pdfIn PDF document text
    • https://vubufogos.weebly.com/uploads/1/3/4/7/134766152/560296.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/jF5ghgj/crowdchange_phi_mu.pdfIn PDF document text
    • https://cdn.sqhk.co/lakivasulis/dkhiYKN/island_in_the_sun_movie_synopsis.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/cub_cadet_st_100_wheeled_string_trimmer_manualbubko.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/Ed6hcgg/vertical_adjacent_complementary_supplementary_angles_calculator.pdfIn PDF document text
    • http://jebumivusesujan.iblogger.org/latest_bollywood_movies_free_hd_2018.pdfIn PDF document text
    • http://megantv.site/369216304008gz99.pdfIn PDF document text
    • http://privateguardingserviceagainstdanger.site/baro_kiteer_timer0u1ha.pdfIn PDF document text
    • http://bit7.top/toyota_techstream_v14_keygen8ns08.pdfIn PDF document text
    • http://astropsychology.site/sogibal5u09.pdfIn PDF document text
    • https://cdn.sqhk.co/kotoweraga/RCjfii6/jojo_siwa_coloring_book_pages.pdfIn PDF document text
    • https://pudorexejuvaw.weebly.com/uploads/1/3/1/4/131455832/9671643.pdfIn PDF document text
    • https://pekijazezob.weebly.com/uploads/1/3/1/4/131407278/5520976.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rasasem.epizy.com/dt466_injectors_in_dt360.pdfIn PDF document text
    • http://zatunikepozis.epizy.com/que_es_la_falciforme.pdfIn PDF document text
    • http://podapuleleg.epizy.com/accidents_reported_today_york_pa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E72 5576 bytes
SHA-256: 53cad2e5bc5bf9dbd1065870b771f85a23a0b1d0ad13dd79e41d1c4f3096cf16
font_01_sfnt_off000150cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150CD 12504 bytes
SHA-256: 6b25ad3e7e7220f91f38c2cd5849d119ca5e406ff9eb3348baf8c8eae76926b3
font_02_sfnt_off000179b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x179B4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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