Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf588140c7671123…

MALICIOUS

PDF

53.6 KB Created: 2020-11-06 21:44:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 266c89e03fdc135effcb731b9652c44e SHA-1: 508a8aac850e55ef6314441bb25ec4d905a7bafa SHA-256: bf588140c767112325dac3e66e17f164dafc2f67612c7c25e0773c1f2fbe46af
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/aws?keyword=inscribed+angle+thm PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377912/normal_5f8c3a697e763.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387421/normal_5f99a999a5fd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374364/normal_5f97edecdc22d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373297/normal_5f9665929b606.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5f89e544a6fd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417422/normal_5f9c177465abb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fajixe/crash_fever_apk_mod_jp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7419fd1-b4df-4453-bfff-c1b12c1dea94/secret_garden_inky_treasure_hunt_boo.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/gakuxegipapij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5001de1d-a6f7-49d3-a6f9-e837c666610a/carrom_pool_apk_paytm_cash.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/golden_ratio_body_proportions_female.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/into_the_light_aleatha_romig.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/balopelexegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22fc6d4a-7ec6-4c97-954e-3137595012fc/power_phrases_book.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC9 5108 bytes
SHA-256: 147d787008ca36617cee0798fa53afc0343cfbbb93d2e2ba5ca94a4b851b1df8
font_01_sfnt_off00007ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE0 11492 bytes
SHA-256: 9dfe429542824583e5429b6688fe06d015ea92bdf21e9dfc23b0525937b8e026
font_02_sfnt_off0000a55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA55D 16192 bytes
SHA-256: 9695cce628265d98fe19231c89d6261270092a6237be2caed840ef37b28e60e4
font_03_sfnt_off0000ba97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA97 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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