Malicious PDF — malware analysis report

Static analysis result for SHA-256 10672a79c77a2903…

MALICIOUS

PDF

68.5 KB Created: 2021-03-15 10:32:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 1be0f9a1ff8067b330f6139427541ed9 SHA-1: cf3e993a52d4771cc5328740fd74daa2b5def5dd SHA-256: 10672a79c77a2903781e47089f2dab65ff5c634d59e593f60737ae63ebd8f8c8
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or redirection scheme. The document body, though partially corrupted, appears to be a lure related to diet plans, designed to entice users to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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/strik?utm_term=best+indian+diet+plan+for+weight+loss+and+muscle+gain PDF link annotation
    • http://verification-help.com/xoxagazutitibimerafuzukuzarc4.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/avatar_comics_imbalance_download.pdfIn PDF document text
    • http://zimezobot.getenjoyment.net/alive_piers_paul_read_quotes.pdfIn PDF document text
    • https://fikozipe.weebly.com/uploads/1/3/4/8/134887908/6817360167.pdfIn PDF document text
    • http://tiwilofojifig.sportsontheweb.net/21518084199.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/gcZ0Ghi/tageta.pdfIn PDF document text
    • http://fijubigatusurov.scienceontheweb.net/8525533313.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/4hijhnR/wupagisipakabizizepigot.pdfIn PDF document text
    • https://cdn.sqhk.co/mixubiki/hhHfTwb/18500753615.pdfIn PDF document text
    • https://cdn.sqhk.co/doporaba/aIrxB3C/crazy_shopping_mod_apk_android_1.pdfIn PDF document text
    • http://iuts.space/bright_starts_swing_assemblyv716e.pdfIn PDF document text
    • http://tututot.mygamesonline.org/fender_hot_rod_deluxe_amp_schematic.pdfIn PDF document text
    • http://vvd.bar/2_examples_of_employees_duties_under_health_and_safety_at_work_act_1974jplhw.pdfIn PDF document text
    • https://kojurivaxudofug.weebly.com/uploads/1/3/2/8/132815346/balewutame.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/hdgMqzy/6876572899.pdfIn PDF document text
    • https://jinabotulopel.weebly.com/uploads/1/3/4/6/134602701/vakujadasipozo.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/kitakilesa/what_digital_photography_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/12_fruits_of_the_holy_spirit_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/mazirukazaju.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/xatirat.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/bharat_movie_all_songs_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/somewhere_over_the_rainbow_iz_lyrics_az.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/86260743703.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/oracle_12c_client_installation_on_redhat_linux_6.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_off0000cdf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF5 5712 bytes
SHA-256: f13255682a2b096f6f4d346af50ea423bf76e7c8d8fd77756a17991c2a17a365
font_01_sfnt_off0000e152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE152 10036 bytes
SHA-256: e7c025438ceb2f3b96732c7bd6dec0c1d4ad758c04cd32f791c067ce121f185e

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