Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c3cd864a37ea58…

MALICIOUS

PDF

42.7 KB Created: 2020-10-03 13:47:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dccea80ea3b11be1ce4adf263c388127 SHA-1: 9009faa685db26ec80f51bb6343ee7332bf98987 SHA-256: 93c3cd864a37ea5896073629b64f79f726bbd4e4b83802f1bb0d54741ca689f7
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://gettraff.ru/strik?keyword=landlord+eviction+notice+pdf In PDF document text
    • http://kemenetob.theschoolofmakingthinking.com/uploads/1/3/1/8/131856543/2961123.pdfIn PDF document text
    • http://files.hairandbeautysuppliesireland.com/uploads/1/3/1/3/131381910/6b2336741.pdfIn PDF document text
    • http://zadonizu.nouraspencils.com/uploads/1/3/1/4/131407227/rawixapuvosejisig.pdfIn PDF document text
    • http://files.tradewindsroofingsc.com/uploads/1/3/0/7/130776275/9133442.pdfIn PDF document text
    • http://files.divinemercy43.com/uploads/1/3/1/4/131406263/tevavupibexijo-mupebexubume-kavajizododo.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/1/0462/9964/4064/files/28275409419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4027/9205/files/74439638809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5307/9963/files/pet_pride_dog_food_recall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/delonghi_turbo_convection_toaster_oven_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a31853-b855-4d2b-81f9-eed10b3ac5ca/gajetapezotizagegosuwov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/9118/3766/files/67394047771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2414/1464/files/deepak_chopra_7_spiritual_laws_of_success.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_off00006a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A90 4972 bytes
SHA-256: 1cd45592396200d0a178f861f616c3a298a2b5eb4c8cda08e1c5ef1deccfc93e
font_01_sfnt_off00007b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B99 10164 bytes
SHA-256: ea9008013b90cc10698a7c5d705ee7ed1345321dc68ddbb18fdf88449f035aa1