Malicious PDF — malware analysis report

Static analysis result for SHA-256 0072cc0d9a33ab1e…

MALICIOUS

PDF

91.2 KB Created: 2021-04-06 16:04:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f4747c55349707a031ec7e0610367275 SHA-1: 52a5f0c14c78aaa87363600ed8846e38fdf4ac5a SHA-256: 0072cc0d9a33ab1ea9d6081536e56d7099d381f4ec18c2356b41cd1e4ca9b3f8
126 Risk Score

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 0.9967

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://bologen.ru/strik?utm_term=kinetix+6000+drive+fault+codes PDF link annotation
    • http://xalowazejadiv.getenjoyment.net/53004250590.pdfIn PDF document text
    • http://rankingcoach-apps.com/modern_combat_5_mod_apk_rexdluprwh.pdfIn PDF document text
    • http://activa-fb.com/2017_durango_sxt_towing_capacityd2kxu.pdfIn PDF document text
    • http://cosmosqrab.online/bass_guitar_method_freekwpjz.pdfIn PDF document text
    • http://leniwatojetojem.medianewsonline.com/rezuzabunarodijem.pdfIn PDF document text
    • http://investmag.org/tp-link_hs100_manualodb09.pdfIn PDF document text
    • http://pazadixokumox.sportsontheweb.net/59286125661.pdfIn PDF document text
    • http://kojijeku.mygamesonline.org/shark_ion_robot_vacuum_rv761_reviews.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://044e8d80-c429-4a1f-820d-9b443c65b389.filesusr.com/ugd/53c654_182410465ffe4c66880b2aa39f4307a1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cfb1976-811e-47c0-86d0-462baf9b29d9/diary_of_a_wimpy_kid_cast_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/20364269594.pdfIn PDF document text
    • http://kunuzozadaza.epizy.com/87514521402.pdfIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_d3d5bc21a9614f6da6735a2abe6314dd.pdf?index=trueIn PDF document text
    • http://kegotetebam.epizy.com/halloween_hardest_word_search_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47314b8a-91cb-45c3-8499-8a4054fb88dd/does_beats_do_black_friday_sales.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/lekoluniberekatukox.pdfIn PDF document text
    • https://d56a38bf-d62e-453c-9b5b-5b2fe88aea46.filesusr.com/ugd/359e64_de4d52ef6919464bb9bc3fe69607e446.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/910e6c43-e07e-4979-bdeb-2bb2bdf57e9b/zafajafomad.pdfIn PDF document text
    • http://zutagisite.epizy.com/4314789803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c73b7aa-26b3-4cb8-a244-e7735eca05e4/fluke_microscanner2_price.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/anatomy_of_hell_dual_audio.pdfIn PDF document text
    • http://wifofevowogak.onlinewebshop.net/13468982543.pdfIn PDF document text
    • https://104e0e48-a4c2-4a03-8647-06ef64d4e6ac.filesusr.com/ugd/e2c6c1_7eeaf3e58f184657bfd320af6eb9246e.pdf?index=trueIn PDF document text
    • https://afa032df-bfad-47da-a9c8-c79260182993.filesusr.com/ugd/6f9b04_f2858f25b5dd40c49f914317af0ff5d5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lomuper/94674199762.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/national_local_weather_hurricane_radar_report.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_off0001250d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1250D 5408 bytes
SHA-256: 742e25117f9d82cd7dd692e600f1077fffe9d069c0968e222e8e7032b6466bc3
font_01_sfnt_off00013792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13792 11768 bytes
SHA-256: 83a6719b29828b1352208b40f5f5b89d0f19b7db8ffe8007309097f145594a92