Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9945fb650e91065…

MALICIOUS

PDF

76.1 KB Created: 2020-12-23 12:51:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d06c7239a4d4c9d9dfd0b18fe8b579ed SHA-1: 3f5400ca6a8e54e7d4da4717c8254596561c3167 SHA-256: a9945fb650e910659610dabeab1ec46a7fa1e2fa379b9cf538fdd66857b6a2e7
126 Risk Score

Malware Insights

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

This PDF document contains multiple links, including one pointing to 'trafficel.ru', which is likely part of a phishing campaign to trick users into downloading fake applications. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of numerous external links suggests a redirection or download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://trafficel.ru/strik?utm_term=fake+call+app+download+jio+phone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455890/normal_5fd03309a2313.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/xusuvawatetibuteb.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/mezegaliza-mimet-gukilomodekaje-vaxibopekexiti.pdfIn PDF document text
    • https://nugaramavamog.weebly.com/uploads/1/3/4/3/134320686/38bba1929d.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/senudidimofasuliz.pdfIn PDF document text
    • https://pegigisujojefuf.weebly.com/uploads/1/3/1/4/131413718/kerod.pdfIn PDF document text
    • https://zuzedunili.weebly.com/uploads/1/3/4/4/134460484/lafufux-ziviwavulesemi-jevekagosaror-fojoxokop.pdfIn PDF document text
    • https://nesutidixet.weebly.com/uploads/1/3/4/7/134724555/3f2f6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2514f6c4-7a6e-482a-894c-b820c458c556/vuxisov.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/new_punjabi_song_status_black_background.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54036a08-cdfd-4ad4-9a2e-636fe6008ddc/nitusibametusupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02c2ff19-b93c-4fb9-84f5-1a5cd712625d/marketing_c212_wgu_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/u_adjectives_list.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/pdf_reduce_file_size_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72684f94-f2cf-4b08-91eb-b6c0ee32375b/zutes.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/9816307771.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/jijalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd3f5d9-a5da-4f1e-be6b-8fb63f162c75/46407669109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c40acf-38a2-48fb-9d13-1b6966ecbbf4/vuvasituxup.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF57 5072 bytes
SHA-256: 00ba0439099960f4359682a506d7fdcb342ac8d0a36eeae97104ccda696d2dcf
font_01_sfnt_off0000f0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B2 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0000fc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC16 11292 bytes
SHA-256: 31542af6a9347a8e247fddf72f6915ad1dc0479416adbdd88e8c1c858a1c5b56

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