Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9a1448ac78e0fe…

MALICIOUS

PDF

129.0 KB Created: 2021-04-01 09:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ebc7f86afa6976fd1c3dc7205f2af8e2 SHA-1: 936e08a57b34267407e215d6f8af0a9ba8717ce3 SHA-256: fa9a1448ac78e0fef930081b836a2f81715999982c759cdf6069c84ad00be621
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 0.9995

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 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://gimoguvi.ru/wix?keyword=mortal+kombat+x+instruction+manual+ps4 PDF link annotation
    • http://fowagovujag.22web.org/sarodugamufimo.pdfIn PDF document text
    • http://fuvepupur.22web.org/90740067902.pdfIn PDF document text
    • http://zabogena.iblogger.org/eichmann_en_jerusalen_gratis.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/zosevid/how_to_reset_alesis_qx49.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/wapanadubom.pdfIn PDF document text
    • http://viwivebobip.epizy.com/lujosan.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/15894547522.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/what_are_the_six_approaches_to_conflict_resolution.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/79001454723.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/wujofetegomewezawixugag.pdfIn PDF document text
    • http://zoxifizuna.epizy.com/45836595515.pdfIn PDF document text
    • https://9907981b-0bc7-4fd3-a434-169f7cdadf42.filesusr.com/ugd/575363_23ee655b92304c31bfd364a43cf2a46f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejados/26460413213.pdfIn PDF document text
    • http://nigepitabatutap.rf.gd/87436618871.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/xeviva.pdfIn PDF document text
    • https://9a4b5e96-23fe-4021-9525-787506808755.filesusr.com/ugd/b3318b_3c5093c899194832b0824903f8cb1d1e.pdf?index=trueIn PDF document text
    • http://kidaberotumopog.epizy.com/9076956635.pdfIn PDF document text
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_fe2a149205d14ef0914ca7a12a24391a.pdf?index=trueIn PDF document text
    • http://puviseb.epizy.com/mr_coffee_coffee_pot_clean_light.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/kofazumidogupiwu.pdfIn PDF document text
    • https://6d4a8fb0-9a8a-4850-8aa1-2b5706121c9a.filesusr.com/ugd/ff2e72_57cadd5dc4a24a8aa6507ba2c9d3e6c1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/jugilere.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/perry_chemical_engineering_handbook_8th_edition_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/lujulutimi.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/vodobapisadurodiz.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_off0001baa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAA9 5444 bytes
SHA-256: 51e74c8f30e2e007f78808273f5a7f80b9c13a39e5d86b9e613c3092ee357036
font_01_sfnt_off0001cd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CD23 11912 bytes
SHA-256: e7a6c16f7caff81775c177dfef89c7a8da53ffdecd89fbf3f16dc5df8625d23a

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