Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7123d0e49e9c019…

MALICIOUS

PDF

58.6 KB Created: 2021-01-30 06:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 6f35cff37cae011ad322676f0372fa4b SHA-1: 325b41be29d1956737809b563fbac95708eb25f2 SHA-256: a7123d0e49e9c01966b7332465e3ed368e2b8339423c1ba49471abca4d4ca974
124 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. It contains numerous embedded URLs pointing to disposable domains, suggesting a phishing or malware distribution campaign. The presence of 'utm_term' parameters in some URLs further supports the idea of tracking user interactions for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9611

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
  • 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
  • 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://seumenha.ru/aws?utm_term=call+of+duty+3+bagas31 PDF link annotation
    • http://serviceforyou.site/pokemon_new_full_movie_in_englishu40c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384817/normal_5fdeb7dcb1257.pdfIn PDF document text
    • https://zaxewunatomilar.weebly.com/uploads/1/3/4/1/134131499/7741013.pdfIn PDF document text
    • http://dnepr24.info/zivezikasugfuzuo.pdfIn PDF document text
    • https://kavuxidawikux.weebly.com/uploads/1/3/4/0/134000359/bogevovo_rufaxu_nevujajimus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368969/normal_5fe5eaa660a72.pdfIn PDF document text
    • http://ru-en.xyz/homemade_facial_mask_for_oily_skin_and_pimplesg3lwo.pdfIn PDF document text
    • http://creamwalls.space/whispers_of_a_machine_hints8u47n.pdfIn PDF document text
    • https://degijidugaf.weebly.com/uploads/1/3/4/8/134886203/7492f462.pdfIn PDF document text
    • http://bilet-pdd.site/solving_equations_with_fractions_and_variables_worksheetsy2b2v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392659/normal_5fffcdcca2357.pdfIn PDF document text
    • https://vulemozebo.weebly.com/uploads/1/3/4/6/134693025/pelajoteji-rovab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411944/normal_5fcb397d48451.pdfIn PDF document text
    • http://eurozone.pro/sopalawub22eer.pdfIn PDF document text
    • http://pasendapp.online/94una.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5fd1caddac430.pdfIn PDF document text
    • http://talakam.space/kebozorokikupamp2vry.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/peveziwoguxuzam/template_builder_online.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/botojojamotatofel.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/20185687259.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/video_lagu_bidadari_tak_bersayap_lirik.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8F 5340 bytes
SHA-256: 090f2fa6065c9d181dcb18c471206c2a507c067676c5583a49b340deb974917b

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