Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d20534ffac9d0ed…

MALICIOUS

PDF

91.8 KB Created: 2021-03-11 07:36:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 65fedba872e2cd46bc293368ddd88c59 SHA-1: 9dbcdee0eee5317896d52a68de1c687770f7bfa3 SHA-256: 7d20534ffac9d0ed028b642e6568cb896c157c24099826e9762fc4d46e50e870
156 Risk Score

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 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 0.9985

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://fokemale.ru/wix?keyword=mad+paradox+skills PDF link annotation
    • http://rituwomijemof.iblogger.org/56033454410.pdfIn PDF document text
    • http://zazegafila.22web.org/how_to_create_a_business_plan_for_a_small_restaurant.pdfIn PDF document text
    • http://mpvideo.org/rukenexumabiboperajolochrmn.pdfIn PDF document text
    • http://useporte.xyz/weduxidew5s4fd.pdfIn PDF document text
    • http://onlinekartiadesi.com/sagoxojuduxadusezejomonul3imj7.pdfIn PDF document text
    • http://feelslike35.com/angularjs_bookmark_page48h73.pdfIn PDF document text
    • http://ig-mediateam.net/verujane4wkha.pdfIn PDF document text
    • http://capridigi.com/986924917461y7f7.pdfIn PDF document text
    • http://timelessdecorum.com/chupana_bhi_nahi_aata_ringtone_freey2wuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dutugege.epizy.com/49850207134.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/72721190166.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/asus_transformer_tf101_boot_from_usb.pdfIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_bad4232fe0f345939749eecf2cbe453c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pasawe/kilugifavif.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/56759554741.pdfIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_662a4e7cce6148b88301f94abcab6683.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zetituri/final_cut_pro_x_free_motion_templates.pdfIn PDF document text
    • https://0298dc5a-7924-4276-8279-06452a5288da.filesusr.com/ugd/b30cf0_eb3074ba928a4bdf8bd07aaad12dda90.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wemazun/what_is_the_neural_tube_formed_from.pdfIn PDF document text
    • http://repuvamiperubo.epizy.com/45741823768.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/chander_pahar_full_movie_hd_720p.pdfIn PDF document text
    • https://711a90e7-97f2-4eab-8690-3003ec1e9b64.filesusr.com/ugd/a0905b_e2b4d7a124394bc78f3fad19ab41105c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/52840170613.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAB 6752 bytes
SHA-256: 4c2f126f0ff674d54497334d99fc0b8fddda26969a35ef322fe60ff98cc4320f
font_01_sfnt_off0001128b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128B 5092 bytes
SHA-256: 065e10ab454e32bbdf9aa82adf5acab49a4dd84cdfe928d0af3fe71bd708bc4a
font_02_sfnt_off000123fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123FC 10680 bytes
SHA-256: a7df5afa275a7958b97a8571d44ff3cd3c4fb4a342dac6199dfcdd1e1d6bfd82
font_03_sfnt_off000148a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148A4 16704 bytes
SHA-256: a005b77f727e4433c454ce62cdb275b4b61c95d3a9760f3b2ec95c31342e5a29

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