Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3ae5fdc7179853…

MALICIOUS

PDF

55.5 KB Created: 2020-10-15 22:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 41ee94c4b0eb4064735dcb5d894aac12 SHA-1: 1b2a6cf35ac45d0f368d0514671c147f20a2847e SHA-256: 3a3ae5fdc7179853b2cfd1e7b313521df3f3d3c72b80ae3a1a2b3cbf5a920490
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/123?keyword=mba+personal+statement+sample+pdf In PDF document text
    • https://site-1038552.mozfiles.com/files/1038552/9478765438.pdfIn PDF document text
    • https://site-1043793.mozfiles.com/files/1043793/79851006912.pdfIn PDF document text
    • https://site-1039753.mozfiles.com/files/1039753/46569289930.pdfIn PDF document text
    • https://site-1042554.mozfiles.com/files/1042554/bunarefa.pdfIn PDF document text
    • https://site-1040681.mozfiles.com/files/1040681/bokaxetatugamop.pdfIn PDF document text
    • https://site-1037059.mozfiles.com/files/1037059/90811048662.pdfIn PDF document text
    • https://site-1038892.mozfiles.com/files/1038892/61765653323.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/1277742.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/kunuliwakemeso.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/manofuzawidevu.pdfIn PDF document text
    • https://gukepofefefika.weebly.com/uploads/1/3/1/4/131437977/pekodogiduzaleremeso.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/4499251.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/95d1823f-de35-4d60-8ed4-c2a421e38bf1/runiwidefilidara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be32e7b0-1bd2-4fc0-9c09-fe8aa0ef99fd/tefaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e260b7f-427b-4096-ae30-2dc796d7511c/vofore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c56ed16-9270-4d25-9387-4d484259b15a/44563166770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8331/7926/files/zixavedofilapomogopunexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3349/1606/files/rexuzelazer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8081/0136/files/between_the_world_and_me_coates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/46821708844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/8448/9145/files/mtv_splitsvilla_12_winner.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A55 5332 bytes
SHA-256: e57daf4c7a6c96fcc0d7ca9b5062d9b08d363160df6cab7a55bf4e52d4af59e2
font_01_sfnt_off0000ac5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC5A 10620 bytes
SHA-256: 679f5b98029fe4a9eea7cf2d0865c757f0c17da942c3b542c4d5b411c56da251

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