Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e74a4771103aa0b…

MALICIOUS

PDF

71.9 KB Created: 2021-03-05 02:53:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6713231c5d1d23d441e0257b303e18ab SHA-1: 9acaf158b2975860326540c1124dd4bee8ab94e6 SHA-256: 1e74a4771103aa0b1fe7c0fcf58a0c42cd53586b0af585475e30fa34c9e22c87
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • 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://nipisod.ru/wix?keyword=deductive+thinking+skills+mind+benders-c1+answers PDF link annotation
    • https://ditoleruv.weebly.com/uploads/1/3/5/3/135345680/98bf0.pdfIn PDF document text
    • https://ragidogatekanex.weebly.com/uploads/1/3/4/3/134388076/sezovazatenupi-wonilobadoki.pdfIn PDF document text
    • https://rufevefiwavanu.weebly.com/uploads/1/3/5/9/135992343/rutategud.pdfIn PDF document text
    • https://cdn.sqhk.co/wozobifanu/3r5ghg1/street_map_of_bluffton_south_carolina.pdfIn PDF document text
    • https://cdn.sqhk.co/lasijutag/jfjiZjh/peximujumenol.pdfIn PDF document text
    • http://tejidetegowewi.iblogger.org/yardman_mower_belt_diagram.pdfIn PDF document text
    • https://mogoribomos.weebly.com/uploads/1/3/4/2/134266362/3175225.pdfIn PDF document text
    • https://cdn.sqhk.co/temududote/KghYjjB/runafigokanedam.pdfIn PDF document text
    • https://sidatotivokusud.weebly.com/uploads/1/3/5/9/135959985/tufobijuj.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/l2gcghg/81311175074.pdfIn PDF document text
    • http://jufikubenisobo.iblogger.org/old_skool_vans_platform_black.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/ghXslLm/renidalodetipis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3f98571-29ce-4c8c-8216-226e6afa0651/kasepavovag.pdfIn PDF document text
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_89256eb1db4846be9471814318c7b868.pdf?index=trueIn PDF document text
    • https://2702ba6d-c693-44a8-a508-54b36c816c16.filesusr.com/ugd/e745be_a9089b13f0d340a496aeeccb9bede4bb.pdf?index=trueIn PDF document text
    • https://dba0ca6b-c979-46b3-87c9-041648dee063.filesusr.com/ugd/6f58fb_47abf70564b6428db0ebd1fed37ef199.pdf?index=trueIn PDF document text
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_47b1433c50f448eca3f4a59565139895.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b0a1006-6fa4-42ee-a695-7d2222b645ca/is_it_good_to_train_chest_and_triceps_together.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2961bf8b-4e1f-4652-9e38-d63c389ca4cf/how_to_install_ecg_on_apple_watch_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ac94540-483d-47d5-a805-e9974c277dfe/is_the_irishman_and_i_heard_you_paint_houses_the_same_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faf466ff-6efe-4706-857d-2654452bb25a/what_is_the_first_dog_man_book_called.pdfIn PDF document text
    • http://tesedep.rf.gd/47291992688.pdfIn PDF document text
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_36a57df263244b3ba62c9a912d87083b.pdf?index=trueIn PDF document text
    • https://2aa89031-56ac-4de1-b828-aabe99840ec8.filesusr.com/ugd/cf14a4_b38e5f289c48466996e61e3c5f1f86fc.pdf?index=trueIn 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_off0000dafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFB 5792 bytes
SHA-256: 3472ce4da9ab55403b615143909e6cac0f0ec14bef67fa818122674e78472477
font_01_sfnt_off0000eeb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB0 10380 bytes
SHA-256: 536eafc65feaad7b83c0d9373d57c01373f7320973beb190f0c7cc9e19dafb84