Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89936086ed35803…

MALICIOUS

PDF

72.3 KB Created: 2020-11-11 13:30:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: cc4071b4d678aaae91cbabc39144b37f SHA-1: 24acf92ed3d83ba0f82301ce120d4657909efbb4 SHA-256: c89936086ed3580330bb5c3b8ec03b2ec6555e7eb47e7f3819e1626b3afb9101
254 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
  • 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 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.
  • 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://traffking.ru/123?keyword=oregon+uniform+citation+and+complaint+codes In PDF document text
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/53940f43884d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea8099bf-1fb8-4a15-abca-e6b7b1f2d7c6/naten.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd64fa2-701d-4a9e-b742-979b37a01f86/water_treatment_certification_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/590f3021-c8e6-4146-ace8-8da4a835fcce/3108735092.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/skyrim_missing_in_action_quest_broken.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67da0c85-0b2c-4af6-b89d-ce27e02589c1/resumen_del_libro_el_conde_de_montecristo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5540d379-0a64-49ff-9298-59913ee9da29/4010828760.pdfIn PDF document text
    • https://s3.amazonaws.com/remoxi/stanley_300_amp_jump_starter_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/wonder_pets_theme_song_ringtone_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/tulufebajopim.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/surogoranur.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/62838965027.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/sixukikojagagoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/lesson_4-1_reteach_classifying_triangles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43c4138d-58b9-44a3-85e0-544fc29c7d53/talupizujirafewam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A1 2828 bytes
SHA-256: 2f32373152b86590eb5c993bf8dbb57d20fc33770b92bc1ec6b5fd985d660553
font_01_sfnt_off0000daaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAA 5504 bytes
SHA-256: bb02b985363817c099362f84df0f37f926ba93ba22cb29aa31f50d141d21804d
font_02_sfnt_off0000ed4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4E 11232 bytes
SHA-256: b8ad96d22f698e685b2af2aea52933d49153ad62c7b28eb84255317553e7a12a

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