Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d07701aad6a62a0…

MALICIOUS

PDF

79.2 KB Created: 2021-02-27 14:05:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b61eaa3af7f0ff8fb85299602b59f352 SHA-1: 4e99d0cd80b43780d1fc675b76f22b0185b0cbfb SHA-256: 9d07701aad6a62a0cdd9fa935ca85d207b1d3a2b759d1927121766129b3c8893
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution attempt. The presence of external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate a deliberate effort to direct users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=real+steel+world+robot+boxing+apk+mod+revdl PDF link annotation
    • https://fuviwamirami.weebly.com/uploads/1/3/5/3/135351498/jitunuz-jowito-livomabeputu.pdfIn PDF document text
    • http://pinegrvuig.fun/the_culture_map_audiobook_freedfz68.pdfIn PDF document text
    • http://vivunijasu.22web.org/fexivovuxuzevasepi.pdfIn PDF document text
    • https://fuzipoxo.weebly.com/uploads/1/3/0/8/130873840/karafowepug-kafigiv-zukibo-xoxuxotagi.pdfIn PDF document text
    • http://raisinslabs.club/25648310650glj96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413373/normal_6000fcc9eb815.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/canon_ij_setup4pwi3.pdfIn PDF document text
    • http://buyfastedcircle.xyz/the_calculus_7_leithold_free_download3x5v7.pdfIn PDF document text
    • http://vumajepipixoju.iblogger.org/larur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vigevot/apologize_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/cuneiform_bone_fracture_x_ray.pdfIn PDF document text
    • http://weverikovufom.rf.gd/sns-_3615-_k9_ordering_guide.pdfIn PDF document text
    • http://ruxurosagogaru.epizy.com/numuselozuvapaf.pdfIn PDF document text
    • http://gepobot.epizy.com/lean_six_sigma_master_black_belt_manual.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.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98E 5496 bytes
SHA-256: a3f1cc12bc1ac27995899b72484fcc31168a2aaef6f4ddd7302abe3bd9a128aa
font_01_sfnt_off0000ec38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC38 6648 bytes
SHA-256: 16f29f2545fe2471abcb613149a07e0d9bad8056711edc95dfc5db754d2d147b
font_02_sfnt_off0000fddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDF 10284 bytes
SHA-256: 4160336ce824902928e02510d490ee185a61599e51a11cd121bc024d11444653
font_03_sfnt_off00012114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12114 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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