Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b4d6c9205b8fb7…

MALICIOUS

PDF

46.8 KB Created: 2020-10-28 00:58:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ef130e31eec050eeda49fb6346ba2378 SHA-1: 81e0ec5956ccd9c6169a3d6672fa28902429fff7 SHA-256: 96b4d6c9205b8fb7dc473381f91bf8539cf82de8a56418719203e965729ef926
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://ttraff.me/123?keyword=free+spell+casting In PDF document text
    • https://foduxami.weebly.com/uploads/1/3/4/4/134452333/7709712.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/miwobajiziz_jiwizu_rumuzijotux_xetegowi.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/fubojaputiwitix-lixamewereleja.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/3794757.pdfIn PDF document text
    • https://punotajevi.weebly.com/uploads/1/3/4/2/134266109/1077940.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000788b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000788b.bin)
    • https://uploads.strikinglycdn.com/files/482a430b-8a73-4b59-8cd8-a436ed790db4/34832991443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f472e39-ead7-46f1-a1a2-e6d056e00a48/52567136506.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d545fe0a-465e-4ded-b9aa-df885f3d1948/mighty_gunvolt_burst_boss_weakness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e29cf3bb-bb43-4595-ad41-a511c1125f33/xodananuziguretav.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/nogigaxewusesad.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/39750192452.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/pesomopenotajub.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/11228364179.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/zijaba.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/ansi_flange_dimensions_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/dofupilemisused.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/37610837355.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/astronomy_textbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6672/6837/files/probably_approximately_correct_valiant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/21900717706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9436/0735/files/bates_house_west_usc.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/ausfllhilfe_fr_die_anlage_er_2017_photovoltaikanlage.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/37221232967.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/o_que__liberalismo.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_off0000788b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000788b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788B 5056 bytes
SHA-256: 69b6e25ed086d4c98a2f14748402dbd426605f03e43a9760fea858263c085f4e
font_01_sfnt_off000089cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89CB 10416 bytes
SHA-256: ff2eff35fbf15a206225f384d67cb79bcec570f6c21557d79c246be2662a6fd0