Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af2c0d0eb0ebdef…

MALICIOUS

PDF

69.6 KB Created: 2021-02-28 02:44:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c04ecf4c63b6520377578ea01366fec5 SHA-1: 56e3885ac2ea461f2fe436c473bc9e045c09781d SHA-256: 4af2c0d0eb0ebdef8224d0cf265ded6b08b4943d7a1819ea09e6f86380aaf466
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=canned+bananas+recipe PDF link annotation
    • http://tonagruz.ru/b_tech_malayalam_movie_fullmqrxs.pdfIn PDF document text
    • http://good-production11.site/peaky_blinders_season_2_in_480p3x0ts.pdfIn PDF document text
    • https://molikosa.weebly.com/uploads/1/3/4/0/134017769/804a06121651.pdfIn PDF document text
    • http://mkr-olimp.info/66928870282h4enr.pdfIn PDF document text
    • http://podarokinsta.site/best_gmat_prep_book_2020wu4lz.pdfIn PDF document text
    • http://vbnmcxz.xyz/31234533419uopci.pdfIn PDF document text
    • http://maslovauto.ru/gun_builder_elite_mod_apk_2020r46pa.pdfIn PDF document text
    • https://runuwafulisejet.weebly.com/uploads/1/3/5/3/135337902/wegaxas.pdfIn PDF document text
    • https://tatujudipopef.weebly.com/uploads/1/3/4/6/134605081/tikatix.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/optiplex_gx620_drivers_audio.pdfIn PDF document text
    • https://vijamosikafej.weebly.com/uploads/1/3/4/7/134772382/revufarewativeremit.pdfIn PDF document text
    • https://sepuvomaxobaba.weebly.com/uploads/1/3/5/3/135311468/99f66318db.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/28581035461.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/dazepabag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sebokegekesuded.atwebpages.com/avent_steriliser_descaling_instructions.pdfIn PDF document text
    • http://sebokegekesuded.atwebpages.com/33073969988.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF20 5080 bytes
SHA-256: 0fd9d8cf3020be3b6947e0414e94c383be51a39bbdfbb9b0600fefcdc0ba7b67
font_01_sfnt_off0000e067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE067 12772 bytes
SHA-256: 2fb1bb205c484e2d4e208c4a0d0e0dbebc717c11380a45c8895298583be83b2f