Malicious PDF — malware analysis report

Static analysis result for SHA-256 7415659b2bf4b280…

MALICIOUS

PDF

78.3 KB Created: 2021-03-16 06:31:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5428448e9eea18ae2142bcde3294a581 SHA-1: 28b70d8042917f9fe3bc0f0fe47d615b14c218ee SHA-256: 7415659b2bf4b28074902cb39a301233925d952b8193af436e43d75cb745b88e
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'Dancing with the Stars' rumors, aiming to trick users into clicking the malicious link. The presence of numerous links on disposable hosting further supports a phishing or malware distribution 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
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=dancing+with+the+stars+2020+cast+rumors In PDF document text
    • https://cdn.sqhk.co/napumefu/mtibTha/canvas_painting_ideas_aesthetic.pdfIn PDF document text
    • http://esagafow.fun/fuvuginoxul1w5k.pdfIn PDF document text
    • http://jipuvojenibomig.22web.org/peaky_blinders_season_3_moviesweb.pdfIn PDF document text
    • http://venira.su/solipiporuwukipegedamanauwrw9.pdfIn PDF document text
    • http://polnews.xyz/gta_hack_no_survey4yjvn.pdfIn PDF document text
    • http://poguzozod.sportsontheweb.net/zabegakomaxura.pdfIn PDF document text
    • http://bomisedoxu.mywebcommunity.org/74279711351.pdfIn PDF document text
    • http://graatorama.space/how_to_set_my_netgear_router_as_a_repeateroqsg7.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/hij8dgd/petroleum_engineer_salary_united_states.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/hijgidz/realm_grinder_r100_guide.pdfIn PDF document text
    • http://budivev.scienceontheweb.net/nopaletefaguvamobopa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wepilujal.rf.gd/mijojenetuzovewijuzubaset.pdfIn PDF document text
    • https://5f384421-c3d0-4b4c-85a6-d3745974446f.filesusr.com/ugd/40006b_0a73ba1af8b1472782371302c4ce14f1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/verirejon/marvel_future_fight_new_version.pdfIn PDF document text
    • https://aa6d2f86-95e2-42cc-897e-6bbd71c3a116.filesusr.com/ugd/78daac_eb6e85c999ee45459250590aadffc317.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/99431918631.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/boarding_ticket_invitation_template.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AE 5548 bytes
SHA-256: 5d12b0dfd55c1719aa7a256b1fbd88b2f6d857e6c6fc8f7c2f6fe13d278c3624
font_01_sfnt_off00010477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10477 11004 bytes
SHA-256: f9d7ce60532bd3532132ef56f662b83a560a5e1e12dc43734b9f91036de5a0d2

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