Malicious PDF — malware analysis report

Static analysis result for SHA-256 800926235c0772b9…

MALICIOUS

PDF

88.0 KB Created: 2021-03-11 16:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ee0ccacf319095ee8fc0a626b056e7b8 SHA-1: 2fe275fb18f8fcb9f3abeab838eee7bde0eaec2d SHA-256: 800926235c0772b962e424fa55929850c4f946d664f7d24e37503752b5276980
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. The document contains numerous embedded URLs, with a primary one pointing to 'soxebez.ru', suggesting a phishing or malware distribution attempt. The presence of multiple disposable hosting links further supports a malicious intent to obscure the true destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://soxebez.ru/award?keyword=children+s+eating+attitude+test+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385011/normal_602d85b4f2361.pdfIn PDF document text
    • https://cdn.sqhk.co/gilubibawi/cYjh2qs/moviesflixhd_south_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/Rii7wxu/debenhams_free_returns_form.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417809/normal_5ffa19a2a6515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447630/normal_602213c3a5d64.pdfIn PDF document text
    • https://cdn.sqhk.co/gixekoji/e2srjeo/2956809538.pdfIn PDF document text
    • https://cdn.sqhk.co/bowazeduz/7hggiic/gundam_micro_wars.pdfIn PDF document text
    • https://cdn.sqhk.co/nozujeraguje/keZhfw9/38687841769.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456122/normal_6013c38d0f77b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376600/normal_6000f76fb3b54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450347/normal_603c67463a9a0.pdfIn PDF document text
    • http://im-marceting.site/rejebakusejuqtgcs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_60222f6682516.pdfIn PDF document text
    • https://cdn.sqhk.co/gotuxixovumu/gjLiaT5/62985781927.pdfIn PDF document text
    • http://dayzcommunity.info/31873060242r9157.pdfIn PDF document text
    • http://legalvictory.group/the_adventures_of_augie_march_first_paragraphoayxq.pdfIn PDF document text
    • http://centerverifybadge.com/xetisutedezipkvpc.pdfIn PDF document text
    • https://cdn.sqhk.co/mugukawi/5djaCmt/37238401931.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/lQghhc9/24263684577.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455198/normal_5ff654d9b9762.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/topipovikapari/honeywell_thermostat_manual_model_rth2300b1038_u1.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/o_mtodo_billings_livro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D5 5096 bytes
SHA-256: 1d33b63fb42f50d92fc28f54666661948bf6ddabf9f79021d77f244068b9d69f
font_01_sfnt_off00011419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11419 15528 bytes
SHA-256: 4ba9c2cebf70bc283870c890169fbfd57ec88f5ad2281646b344745fef40b6bc
font_02_sfnt_off000143ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143EE 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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