Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c33216d2144fd6…

MALICIOUS

PDF

39.9 KB Created: 2020-10-01 01:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a3b495704f6305026845f826d84cb2b4 SHA-1: 616c4e77b63adf9e8a8d58e998d57efc93902c2f SHA-256: b6c33216d2144fd695b1200317b139fab5ea4e799430a57c61f132823661def9
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=indian+criminal+law+books+in+hindi+free+download+pdf In PDF document text
    • http://files.ericjstokan.com/uploads/1/3/1/6/131637553/zobepazoz.pdfIn PDF document text
    • http://files.nicolophobiaphotography.com/uploads/1/3/1/4/131452942/3685486.pdfIn PDF document text
    • http://files.profoundlyimprovinglives.com/uploads/1/3/1/3/131379828/lisigumapar.pdfIn PDF document text
    • http://sekure.jenms2.com/uploads/1/3/0/7/130739024/vubitiv_goginep_vadilopozaliro_talavuxid.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/1/0429/8339/1395/files/30567010673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/50621294093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/string_to_int64_golang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/53837698845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/33510803114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8097/2456/files/93601719505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8008/0801/files/travel_backpack_buying_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/45090655838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/94901895705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6574/4287/files/56264792342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7780/3925/files/jigogixinakabudifujeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6538/4866/files/10th_new_syllabus_maths_ganga_guide_download.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_off00005cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD8 5628 bytes
SHA-256: bafc8b2aa73008ea33547a9056fd3d56e6d45e72e03671f3a588f8d20c216f18
font_01_sfnt_off00006fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE3 10192 bytes
SHA-256: f1b3dbbb20208a7c7536d77028fac57e432d72eb6f643185a57db88b12628595

Open this report in the interactive analyzer, or submit your own file for analysis.