Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68cb97eab5b498c…

MALICIOUS

PDF

53.4 KB Created: 2020-10-26 01:26:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 9cf59082bb71a18080356821ab1155d0 SHA-1: 132061a89d2d38671450595a83ebdd90ec1f3bdf SHA-256: c68cb97eab5b498c5dc20cf253667443f4ae2cbc3e148d92e185a485b5f37d72
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=genetic+variation+notes+pdf In PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/poritir_zebon_xowefon_xejago.pdfIn PDF document text
    • https://siveruvamavekug.weebly.com/uploads/1/3/4/2/134266289/zilax-pojimexuvite-zozolawituz.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008315.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008315.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000ba97.bin)
    • https://cdn.shopify.com/s/files/1/0479/2277/4180/files/xokulozutesaxegunafos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/barriers_to_entry_in_monopoly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/gawovepalaselex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59400afd-3aa2-4cb6-bd6a-924df2c8e4eb/6326301075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1ee1297-0da7-4779-8be5-c6e3fbca716f/gta_san_andreas_extreme_edition_2011_www.pcgamespunch.com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5a8308e-b620-4f0b-a162-24cb8a1d0eb2/72937923579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d63d76c6-f68b-45c9-becf-83b706b35b14/dawapufarigefimilizawaner.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/arab_times_kuwait_newspaper.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/herman_bavinck_our_reasonable_faith.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/29750287025.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/english_reading_lessons_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8526/4546/files/nodal_ninja_r20_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0612/7003/files/dunubazax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8837/0582/files/panda_free_antivirus_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7874aa23-bb53-46b0-94e9-3d57848db487/imagine_dragons_smoke_and_mirrors_album_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/068a6c27-36ed-443e-9674-dfe9dbe05375/fantasy_age_bestiary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/691281b6-b3ae-47ce-a50a-93cca34f646d/republik_sandiwara_cinta_lirik_dan_chord.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44ef400f-e6cc-40d1-8d58-c01f10ba5f90/64532731571.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_off00008315.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8315 4996 bytes
SHA-256: ace3047d08c1cf2c2fc13e981ac833a258b9fe1de0d5d40025a0cc9077f3c547
font_01_sfnt_off0000942a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x942A 11300 bytes
SHA-256: 6839a4ffe2ba263f7013ed351fc99477d4c680b8417aad022e223a624e0c6f1b
font_02_sfnt_off0000ba97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA97 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71