Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ee5d0e8278b74b…

MALICIOUS

PDF

57.5 KB Created: 2020-10-03 17:18:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: add71328772dd7527096533d570cf47d SHA-1: 6a93f3041786defd5494f936a0aadeb473f0cf3a SHA-256: e2ee5d0e8278b74ba1eb4a1f7fe4ce2a0afa3d7947389f265baa9c653df3dadd
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://ggtraff.ru/strik?keyword=tcpdf+table+cell+image In PDF document text
    • http://nawoni.emeastrategy.com/uploads/1/3/2/7/132710779/zademapidivene.pdfIn PDF document text
    • http://waned.newlife-hm.com/uploads/1/3/0/7/130738680/nopanarugemakiw.pdfIn PDF document text
    • http://naverawov.cluettinsurance.com/uploads/1/3/2/8/132814930/xibezezepanunitil.pdfIn PDF document text
    • http://files.elishaharteis.com/uploads/1/3/1/4/131438389/183f2146.pdfIn PDF document text
    • http://files.ontariomotorcycleaccidentlaw.com/uploads/1/3/0/7/130739684/jezadepe-rizimisapup-berawa.pdfIn PDF document text
    • http://files.lawwithdenise.net/uploads/1/3/0/9/130969291/823263.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/understanding_health_insurance_chapter_10_workbook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2310/4162/files/hoover_spinscrub_max_extract_dual_v_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0917/files/slayer_god_hates_us_all_songbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0294/3899/files/gumball_dungeon_beginner_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/7450/6918/files/chao_guide_sonic_adventure_2_battle.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_off000092a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A1 5288 bytes
SHA-256: 060306610f0df2b0e5acdb8130cf969a03b4b66b0965d611904c6a369390ee70
font_01_sfnt_off0000a493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA493 17052 bytes
SHA-256: 6ceb76726415c2fe7b3d0742e5695161c8f61f4f6ddf092e6bafeec316623237