Malicious PDF — malware analysis report

Static analysis result for SHA-256 daebc53739d5ceab…

MALICIOUS

PDF

46.7 KB Created: 2020-10-13 11:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8a36a6c193d499999d10993541576046 SHA-1: e33efd396a9da8a62f87addc9c20bbbc5717d41e SHA-256: daebc53739d5ceabefc2c0b29532554747a13b8f5b08b6f755a3f0051829dde9
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/strik?keyword=crafting+guide+gw2+weaponsmith In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8742796.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/nidisetati.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dekegu.pdfIn PDF document text
    • https://site-1037011.mozfiles.com/files/1037011/vumod.pdfIn PDF document text
    • https://site-1044303.mozfiles.com/files/1044303/segofofilil.pdfIn PDF document text
    • https://site-1036894.mozfiles.com/files/1036894/98317662778.pdfIn PDF document text
    • https://site-1037238.mozfiles.com/files/1037238/40717085267.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://cdn.shopify.com/s/files/1/0430/9113/2567/files/raditizapefuxojax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8189/2508/files/1745158393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7253/5707/files/michael_mann_sources_of_social_power.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6644/9816/files/tekxit_3_servers_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7940/4194/files/sibokudavuxutil.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_off00006d08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D08 5552 bytes
SHA-256: eee5dd24c45015ac13edee80ed579404fce23a9b32e8e0494946bc30e0372fd2
font_01_sfnt_off00007fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCC 9420 bytes
SHA-256: e86d2766521262b6e4816c9fe5405f61857c356a9be8661609e324db63ec2511
font_02_sfnt_off0000a009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA009 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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