Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e8afee2af71e1e…

MALICIOUS

PDF

73.1 KB Created: 2021-02-06 09:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f32717d47d35335027016b947b8706b7 SHA-1: 3cd3cd512eb5db044c050ee81df6d01e4e7ea8a3 SHA-256: a6e8afee2af71e1ed5a698186194e93e23ac22097b53e36206d9bb211ff6c71a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=detraction%20catholic%20answers PDF link annotation
    • https://bijejumutitin.weebly.com/uploads/1/3/1/4/131454352/9535714.pdfIn PDF document text
    • https://gamuzajebi.weebly.com/uploads/1/3/4/4/134481120/kiselek.pdfIn PDF document text
    • https://viwobatenujaneg.weebly.com/uploads/1/3/4/4/134444739/pozubarolafojekaxega.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xeroguru/41735689464.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/bu_exam_admit_card_2019.pdfIn PDF document text
    • http://gefuxexo.epizy.com/best_cheating_apps_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/kodagu_gowdalli_weather_report.pdfIn PDF document text
    • http://wexoloxi.rf.gd/88294290850.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/soluroserexan.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/baermann_clarinet_scales.pdfIn PDF document text
    • http://jizonizop.rf.gd/vepuwibabosamagukovugo.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/cars_3_driven_to_win_game_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/66144049876.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/tafiliz.pdfIn PDF document text
    • http://kizuwopo.epizy.com/greek_calligraphy_fonts.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_off0000e2c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C5 4976 bytes
SHA-256: a53e93f6a524c43a7d9003ff0e839d3b90c6ecb953497360556d96f9dc0ee627
font_01_sfnt_off0000f3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BE 10532 bytes
SHA-256: a7f5df1cb229227aa403c049b7e8c3ae27c0bbac04078da1758899321f42028d