Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae187281ea33fbd5…

MALICIOUS

PDF

84.0 KB Created: 2021-03-01 02:14:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b7745527084ac7fdfb6e372050ee88dd SHA-1: eab009b3f387881cd3eba92d5932bcec3dd290a4 SHA-256: ae187281ea33fbd5e5473d3d77e4e43a46ed3b8b813d3da70f1dc25534b447ad
196 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
  • 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://soxebez.ru/award?keyword=quiz+questions+theme+tunes PDF link annotation
    • http://beamorem.com/musamepuslik5y.pdfIn PDF document text
    • https://vakitisize.weebly.com/uploads/1/3/4/0/134017930/mozexunigosi-nafotidupiv-digod.pdfIn PDF document text
    • http://aazzzry.space/vixiravezazipasulovesadc4e0p.pdfIn PDF document text
    • http://vnds-super.space/4g_router_huawei_e5186s_manualpawgw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465935/normal_5ff56d77d6391.pdfIn PDF document text
    • https://relujebaxarun.weebly.com/uploads/1/3/1/1/131164257/sumevojakabedegudan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409796/normal_5fd11f71d78fb.pdfIn PDF document text
    • http://mishgen.com/what_is_the_main_role_of_a_social_workere2nm2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415518/normal_6011d097bd5a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414869/normal_600796a49845c.pdfIn PDF document text
    • http://dvertsoff.ru/55655625275ydifk.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/rixevozajixezos/1504656865.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/pijuvaz.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/alpha_omega_elite_car_seat_how_to_remove_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/37783801832.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/coliform_count_water_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/welute.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/30128978394.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_off00010fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB2 4824 bytes
SHA-256: f39e2a68bd80c1de35d675431601a448d42b0946a13d977ed051c34dc6e5c0ad
font_01_sfnt_off00012009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12009 10348 bytes
SHA-256: 2b9c1aafdff29e19b15c702d36c7767c313fca7c628adf5a79804e28ebea376a