Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2dca2d3e373d7b…

MALICIOUS

PDF

69.2 KB Created: 2021-02-13 00:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4cab87548d231de8b5aa861ecc945307 SHA-1: 7a409d7556d47595c7031d514a33ac88f927ce0a SHA-256: 7a2dca2d3e373d7bc75d426b6be7e061493447855fdeaba285ce1a25ef3fc46f
196 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.
  • 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://baarspo.ru/wix?keyword=economic+science+association+dijon PDF link annotation
    • http://msertis.xyz/year_planner_template_2020_south_africalw6q9.pdfIn PDF document text
    • https://kifeketefisub.weebly.com/uploads/1/3/5/3/135347095/dimufukota_mubot.pdfIn PDF document text
    • http://yozi.store/invitation_card_psd_filex05s4.pdfIn PDF document text
    • https://cdn.sqhk.co/jazumagefo/hhgdgdS/inside_out_thought_bubbles_mod_apk.pdfIn PDF document text
    • http://liketsven.xyz/nikapinimojg75n.pdfIn PDF document text
    • http://topdiscount.pro/monteiths_apple_cider_nutritional_information2j78v.pdfIn PDF document text
    • https://tewafegode.weebly.com/uploads/1/3/5/3/135350941/bitefakoxale-jufovig-difegutiteje-jejuzuzewud.pdfIn PDF document text
    • http://dfahsdfgjsfg.online/sasiwikiluzirisosozebi5da.pdfIn PDF document text
    • https://bunivuwavimi.weebly.com/uploads/1/3/4/7/134706582/9626826.pdfIn PDF document text
    • https://bimuwosexiwo.weebly.com/uploads/1/3/1/1/131164043/jimero.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/jeduzizonox/95301555376.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/edgar_allan_poe_the_black_cat.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/bharat_ka_naksha_hd_image.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/top_10_relaxing_games_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/gijemiwowetuzemujakezu.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/33459529821.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/guitar_backing_track_maker_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/caffeine_informer_mcdonalds.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/autodesk_design_center.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_off0000d21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21F 4992 bytes
SHA-256: fca8ef78b1ea0fa5bb80bddabbd273ad17e10789a03cd8b23613643f4034385b
font_01_sfnt_off0000e30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30E 10864 bytes
SHA-256: a72ef954d5c84a97fbcd2bb189595be836321283c57b4e19eeea6eb0cdec0e85

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