Malicious PDF — malware analysis report

Static analysis result for SHA-256 4018b59a62ac8416…

MALICIOUS

PDF

76.1 KB Created: 2021-03-20 19:43:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1a339fc42a21173ce57c580fdc1cc9f9 SHA-1: b3a81bd47095c1717fc23bb74cd85a64373edc36 SHA-256: 4018b59a62ac84161e8d6b5f02a99c4b038fcbea6e97d2887462475c7f0b6d72
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://golowaki.ru/award?keyword=machine+learning+pdf+2020 PDF link annotation
    • http://smm-target.ru/fadenolenemotulitoxekep91g38.pdfIn PDF document text
    • http://keepxufi.space/rifarafotimerorozckeqa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404503/normal_5fdd29c6c0c3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402707/normal_5ff7bc64f15a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449622/normal_6048580760cc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_604e1d1c60776.pdfIn PDF document text
    • http://ketotreno.buzz/188581603219bnc0.pdfIn PDF document text
    • http://prodit.space/firex_120-890b_manualur9px.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374983/normal_6008483f8964c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/1209054626.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/cnet_internet_manager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/180f4e76-1023-4f27-ac5a-1307b46fffed/19912124111.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/vifogevipomirif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8283a04d-6f9a-4f84-8ed1-102ce6c5c649/bts_love_yourself_answer_lyrics_hangul.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/evenflo_tribute_convertible_car_seat_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/gumalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62bf95a2-433f-458f-a51c-cf205634f508/kakerafaparunug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34fc49b3-4296-4645-a643-adb5976efb2e/why_has_my_steamer_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/java_image_from_url_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80895cf7-4581-4fe1-84de-2f1bdfefdca2/dell_latitude_e6430_battery_2_not_present.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/alagey_alagey_full_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/375fdbe9-f96e-43fd-9037-4318da3c1a67/what_are_the_different_formula_to_identify_surface_area_of_a_sphere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e92b8e1d-2c40-4b1c-9538-d746e3216f56/applied_numerical_analysis_7th_edition_solutions.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA28 5516 bytes
SHA-256: b860bc8a94519a4b598117da247960cd3eb30de41a219ac2ac3ee8d8443f642a
font_01_sfnt_off0000fcf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF4 10868 bytes
SHA-256: d75e75fc001068a33707f81705e224530d9991f35e4ce6c95217adc846583191

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