Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96fbed9b3986b0a…

MALICIOUS

PDF

79.7 KB Created: 2021-02-27 00:51:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0cb54c0aa0a56affbb833d14514a4231 SHA-1: 890ae6bd1de917b4961267858c9bf8032fc462e1 SHA-256: f96fbed9b3986b0af854fd6d4c1f41d1c5ac7a360128859df5dbf0e38c6c579f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily truncated and obfuscated, contains a URL that appears to be a lure for technical support or account recovery, suggesting a phishing or credential harvesting attempt. The presence of external URIs and link farm characteristics further supports a malicious intent to redirect users to potentially harmful sites.

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://ponafet.ru/aws?utm_term=how+to+reset+my+powerbeats+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405186/normal_60263ab5a76cb.pdfIn PDF document text
    • http://cparta.moscow/basoxajotodakuleje3g3ye.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476294/normal_600bbcc637a50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388612/normal_5fc6f125616c7.pdfIn PDF document text
    • https://cdn.sqhk.co/sufiwotag/jcjfgc3/amazon_a_to_z_claim_status.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/house_on_the_hill_lyrics_lil_skies.pdfIn PDF document text
    • http://yoganchik.space/lenekepiginakegipi34q3u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426280/normal_602ab0ba639f2.pdfIn PDF document text
    • https://cdn.sqhk.co/muribirigim/gjbyjda/hyde_app_hider_app_to_hide_apps_android.pdfIn PDF document text
    • http://tusiteguluvora.getenjoyment.net/example_of_a_central_idea_statement.pdfIn PDF document text
    • http://zugugalepew.mypressonline.com/how_to_do_a_voltage_drop_test_on_fuel_pump_relay.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/cBhe30h/93196930731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479718/normal_5fdaaaf85f8bc.pdfIn PDF document text
    • https://cdn.sqhk.co/gediwuwanol/Mged4hj/oddmar_android_full_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488580/normal_5fe38555d53bf.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/dIsVgjA/best_streamlabs_overlays_free.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
    • http://zevusup.atwebpages.com/how_many_carbs_are_in_a_slice_of_margherita_pizza.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_off0000e874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE874 4992 bytes
SHA-256: c1a2f97a8d8dc2ecbe51307bde368e9c2ee323451091606fb6732f99b0b64259
font_01_sfnt_off0000f974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF974 12712 bytes
SHA-256: 6b7c0a73ccf1e234bb24190b02bca1703fe3f187ca10ad6ec871830a1bbf0f8c
font_02_sfnt_off00012338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12338 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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