Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e31f29a539e1b7…

MALICIOUS

PDF

66.3 KB Created: 2021-02-19 01:45:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f34f0a524cbf3303d732567cd5d3b147 SHA-1: 443547e7489ee1e758a6888e4d9386ab1b98d526 SHA-256: e2e31f29a539e1b7df5cb210a223eddeb3b397c8efa334e2b164cc4ade5a9424
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=natural+selection+hardy+weinberg+lab+answers PDF link annotation
    • https://vidafipi.weebly.com/uploads/1/3/1/6/131636743/kadepedixefopesejaju.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/0k2kpGv/hearthstone_battlegrounds_patch_october_2020.pdfIn PDF document text
    • https://zulevoto.weebly.com/uploads/1/3/2/6/132696122/61865a6.pdfIn PDF document text
    • https://cdn.sqhk.co/samanugutu/bmvahbP/space_jam_2_release_date_2018.pdfIn PDF document text
    • https://wigowuwadapol.weebly.com/uploads/1/3/5/3/135315864/28f86741b3.pdfIn PDF document text
    • https://nabivedoki.weebly.com/uploads/1/3/1/4/131407492/xafowudadifekatixa.pdfIn PDF document text
    • https://witaretazijaw.weebly.com/uploads/1/3/0/8/130813730/5247223.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/ghaThjF/mini_arcade_two_player_games_apple_tv.pdfIn PDF document text
    • https://jetezoxow.weebly.com/uploads/1/3/1/3/131379231/wedelas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fitatina.rf.gd/53036170793.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/xapiregika.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/58597065606.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/rogiritazerukituwopovebuf.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/apology_letter_format_for_office.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/professional_certificate_templates_psd_free.pdfIn PDF document text
    • http://nudifezidezi.rf.gd/graphing_exponential_functions_practice_worksheet_answers.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_off0000c68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC68E 5504 bytes
SHA-256: a616c2eadb65d639da3672e12668a91b16916530bec8d96619be10ab09284b0d
font_01_sfnt_off0000d95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95A 10152 bytes
SHA-256: e003560b1d81d0bec2b66930dcaa36c888b03d3e146e6a0c959f93872e0de6f2

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