Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c9cc66898545829…

MALICIOUS

PDF

66.8 KB Created: 2020-10-25 10:11:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 4000e9190ed0fadccb208cb254e63048 SHA-1: 5782a7abaad065399d85cc599300c4f7517729d1 SHA-256: 6c9cc66898545829deea8e9be63530b6fe492daee956a767d5a8fe7dd53b45c5
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/aws?keyword=pros+and+cons+of+genetically+modified+foods+pdf In PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/naratozunoluwukin.pdfIn PDF document text
    • https://xosotujusosevo.weebly.com/uploads/1/3/4/3/134377620/2287957.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/52cece19e18.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/8443630.pdfIn PDF document text
    • https://zajefepitav.weebly.com/uploads/1/3/4/2/134266194/jifojajibunujepepis.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/bisevaxi.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/tapema.pdfIn PDF document text
    • https://wetejitaxazis.weebly.com/uploads/1/3/4/3/134306742/67591e8f7be735f.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c3c2.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c3c2.bin)
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/android_add_margin_to_imageview_programmatically.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/wiwuzixig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4231/6703/files/super_mario_apk_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1894/3125/files/il_schedule_80_20_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7298/6014/files/all_of_me_piano_accompaniment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc828903-50e5-4fbc-87e4-f0c8aa1efda8/demolition_derby_multiplayer_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/345edac1-5256-4f6c-8a65-80b1c8a99932/chemistry_live_laboratory_notebook_a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95fc5030-3fa6-4a97-b7b5-097a7b2bf74f/goxife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c38db3cb-56e9-4442-b794-f388d82530f2/tazisabazixekidupakofuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5263/6573/files/zuxak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6145/6279/files/pathfinder_kingmaker_golarion_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5731/4983/files/set_associative_cache_tag_index_offset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4599/7722/files/96320760586.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 extracted file (font_00_sfnt_off0000c3c2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C2 5576 bytes
SHA-256: b0f4d523ba51aefa8a8391429ba8aff0d042682647a9085e36a1d021dc70e6bd
font_01_sfnt_off0000d6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B6 11812 bytes
SHA-256: 1598302fe26e073659f66f2d654ef36a6c8c67dc4001022b2be837d822a13c48