Malicious PDF — malware analysis report

Static analysis result for SHA-256 e209fd2728d3218d…

MALICIOUS

PDF

71.0 KB Created: 2021-05-24 19:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c9a5853868a444373db3beb0b52754f7 SHA-1: 232ecd4d4267f766d81b40d8db048a8fd7c627e1 SHA-256: e209fd2728d3218d5e22bbe638ff5dd5403b8ee04429026f8b3cca06b0160e52
154 Risk Score

Malware Insights

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

The PDF contains a link that directs users to a URL associated with malicious redirector infrastructure, disguised as a game download. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the embedded URL is the primary indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://dafemum.ru/strik?utm_term=gta+san+andreas+pc+indir+gezginler In PDF document text
    • https://cdn-cms.f-static.net/uploads/4461780/normal_600a73ca1882c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459057/normal_602f1bd83a139.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446168/normal_5ffbe3d215fde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477409/normal_6030a22fc6938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415770/normal_60559c23dd218.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/rabewiruzitewa/xekubegiluzemoxunezanedu.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/15256603716.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/22203180618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f6e829-aa8d-438d-b54e-5f169388495f/pokukigezonilewox.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/zokoz.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/four_types_of_utility_marketing_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/how_to_convert_delta_crib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe6ddab-5a66-47ae-8a07-86fbb5867368/vowifilitalulugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd6a06c2-81fe-454e-bd73-54cd47193c90/o_que__rpa_robotic_process_automation.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/vetatopimixezadakutugum.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/backup_android_messages_on_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/wallpaper_hd_for_mobile_natural.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/filosofia_del_derecho_juan_manuel_teran.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/3059872270.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/jamafivibek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2345ef9b-f3e8-48a5-a7a0-94588c845061/ropufobewol.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/the_bridge_called_my_back_poem.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/baahubali_2_movie_song_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/bacterial_transformation_heat_shock.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/maxebasububebikizokiza.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_off0000d49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49B 5320 bytes
SHA-256: dfb466501b4ccfda8d649a8945dd31a287e815cbcf607683b306938ad7eaf95d
font_01_sfnt_off0000e6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CF 12252 bytes
SHA-256: 6180362b40c244ffb20afcb25cc9fceb59f21a10ae368df2217a52800d60fc18

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