Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e8ba417667d59ab…

MALICIOUS

PDF

71.6 KB Created: 2021-03-03 14:19:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 12860ae7ce8d868f2bc7a14882cf857b SHA-1: 6cf394ca0b152853e634de6a2d3e5ee4139a1e2d SHA-256: 7e8ba417667d59ab4407ae902a1f5658240f276f991b14639544390da51d034c
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://dugedepap.ru/wix?keyword=lego+marvel+avengers+dlc+trophy+guide PDF link annotation
    • https://cdn.sqhk.co/waxubisolo/SjciMOq/fear_the_walking_dead_season_5_review_forbes.pdfIn PDF document text
    • http://nekalakizifefe.22web.org/the_emperor_s_new_school_episode_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/mumesimasozo/gfNjenR/kevawakix.pdfIn PDF document text
    • https://tilolujow.weebly.com/uploads/1/3/1/1/131164317/3332218.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/ILZq4gf/41386221070.pdfIn PDF document text
    • https://vuwezamubom.weebly.com/uploads/1/3/0/8/130814902/1439f3439fd2a3d.pdfIn PDF document text
    • http://pubomotikevetu.22web.org/34513541659.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/rudelazifizuvo/lightning_damage_report_template.pdfIn PDF document text
    • http://nopizapokife.epizy.com/44149168716.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/google_slides_templates_for_science.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/reading_plus_answers_reddit_level_m.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/ritepoxezovovijoredul.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/sepolevuwus.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/dipilixaja.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/benuxe.pdfIn PDF document text
    • http://detuzojezil.rf.gd/dajetebitilerig.pdfIn PDF document text
    • http://gawexerexi.rf.gd/eddy_current_probe_selection_guide.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_off0000d9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B9 5592 bytes
SHA-256: a16b4c96278d0f77bb34f6a31e5d99103d434ac4cf5f6e76269c42fd8fedfc09
font_01_sfnt_off0000eca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA2 10580 bytes
SHA-256: 0c8a5047d22e2c103f350cacbbc890f596f710a55685d1f1062a25c28a42673f

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