Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a9ecc48419066a…

MALICIOUS

PDF

67.4 KB Created: 2021-02-02 10:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9698666c1506eccdd19bed19e4c48edb SHA-1: 12814a4381e874ebeb0b42b559991b886559c47d SHA-256: a1a9ecc48419066a3ba7f17c7dfef621e6a2086bc87fb3451352f074fcce868e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/wb?keyword=cannon%20balls%203d%20famobi In PDF document text
    • http://lorenbayi.com/highway_traffic_racer_3d_need_for_racingdyw1h.pdfIn PDF document text
    • https://xitolomeka.weebly.com/uploads/1/3/4/0/134012462/0c7636ca170e0.pdfIn PDF document text
    • https://sidomepavoresob.weebly.com/uploads/1/3/5/3/135322675/7862757.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489980/normal_5fd38fc185d11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369904/normal_5ff952d31d8b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413563/normal_5fca969f81aaf.pdfIn PDF document text
    • http://zoomita.fun/5873845548s1tqh.pdfIn PDF document text
    • http://vabetovopux.66ghz.com/andantino_carulli.pdfIn PDF document text
    • https://kifeketefisub.weebly.com/uploads/1/3/5/3/135347095/govixogemix_vororumadobegik_zutakewozitor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466411/normal_6012ecf5628b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421770/normal_5fe6d61f8ee7b.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/us_off_road_army_truck_mod_apktbzhp.pdfIn PDF document text
    • https://lekaretuzej.weebly.com/uploads/1/3/0/7/130738752/pabademawugesinof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447915/normal_5fdee4bc5d7a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vujipuxi.epizy.com/tata_bluescope_sheet_size.pdfIn PDF document text
    • http://fiwarirekagugen.epizy.com/3275502040.pdfIn PDF document text
    • http://jusaxokipumata.rf.gd/wuwupanufepatusedil.pdfIn PDF document text
    • http://xujogefup.rf.gd/jafajenavumenumuneka.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_off0000cc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC4E 5164 bytes
SHA-256: 4e690f7381b6d67a49391682e62ba6d23e643539f17f89ba8c4fb45cbf868e2a
font_01_sfnt_off0000ddc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC6 10260 bytes
SHA-256: be7d075b6c26e6dbe95ec032099a47456467bfb2adbef46cdbf4a0913c422d30

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