Malicious PDF — malware analysis report

Static analysis result for SHA-256 edac834864afd649…

MALICIOUS

PDF

70.6 KB Created: 2021-03-13 20:38:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9f48e675917895f16429bb2950aa15df SHA-1: 996407e722dbd615a4b0e91be569119533a2efab SHA-256: edac834864afd6497e7551aa19cd0c04994c5b07adbbb723a01597dddd1724f4
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' confirms the use of disposable hosting for these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/wix?keyword=august+ep650+manual PDF link annotation
    • https://cdn.sqhk.co/melobokodijo/dcb5exk/what_does_talisman_mean_in_a_sentence.pdfIn PDF document text
    • https://cdn.sqhk.co/guxuboru/XiijjVY/radiation_city_full_version_free_download.pdfIn PDF document text
    • http://mafejaruvoje.sportsontheweb.net/logilufiwukuworeveratowe.pdfIn PDF document text
    • http://nipizakevenuvis.scienceontheweb.net/vimopadanisogalugukime.pdfIn PDF document text
    • https://wedutigumufezeb.weebly.com/uploads/1/3/4/6/134659425/2749376.pdfIn PDF document text
    • https://joguwezur.weebly.com/uploads/1/3/4/5/134500750/997672.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/foguxajukejixaxa.pdfIn PDF document text
    • https://vonorakukipi.weebly.com/uploads/1/3/4/7/134721252/6c3517aa31fab2.pdfIn PDF document text
    • http://dusinetukuzif.22web.org/ya_no_eres_pan_y_vino_letra_y_acordes_la_cuerda.pdfIn PDF document text
    • https://napuraviseso.weebly.com/uploads/1/3/4/3/134322211/4795205.pdfIn PDF document text
    • https://titezexi.weebly.com/uploads/1/3/4/6/134639754/590ca6.pdfIn PDF document text
    • http://kexolifowuj.medianewsonline.com/41037160182.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/lovixusib.pdfIn PDF document text
    • https://cdn.sqhk.co/vufebevefo/AdHhijc/wifi_scanner_app_for_windows_7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rowodebifofida.rf.gd/cdburnerxp_windows_8_64_bit.pdfIn PDF document text
    • http://bunulewokiluko.epizy.com/memofarawajikejeluxabomu.pdfIn PDF document text
    • http://zixoridepub.rf.gd/popejebit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01644da2-f027-48ab-8f6d-c87f73361b31/jadugalozodepejiwojujaka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/229f7146-4756-438a-bff4-8ffef0cd51a6/huckleberry_finn_chapter_4-7_summary.pdfIn PDF document text
    • http://wusozugidiwe.rf.gd/how_to_assemble_baby_einstein_neptune_jumper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf2f2fa3-7d44-49e1-bb3f-84a1a0208ca3/how_to_replace_battery_in_2017_honda_pilot_remote.pdfIn PDF document text
    • http://wivifizurata.epizy.com/cbi_shankar_kannada_movie_video_songs.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_off0000d6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BB 5452 bytes
SHA-256: 1662243f41cc185f1b32f7a95a575e781a36bd12306187daf0779de8bc858c1d
font_01_sfnt_off0000e93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93F 10708 bytes
SHA-256: ad481c9d17e58af7202f8ab11dbd24cfe9d45d01ce325a4e3f520638437df04a

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