Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1ecc73daae772b…

MALICIOUS

PDF

51.2 KB Created: 2020-10-03 18:03:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2ffabacf0688c79d0c67aebd1dd99959 SHA-1: b4ddb506e2633f9c79de1c2af277e2b2753fd835 SHA-256: ca1ecc73daae772b2afad2d310c0f48903fe02e77043e9fde22cb6a9351a1dfa
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=mac+velvet+teddy+asian In PDF document text
    • http://files.huneremin.com/uploads/1/3/1/4/131437246/movatupobizudu.pdfIn PDF document text
    • http://bawifonap.yamayogacollective.com/uploads/1/3/1/1/131164573/raturazamuli.pdfIn PDF document text
    • http://wozuvo.dermawand.greatwebsitebuilder.com/uploads/1/3/1/4/131453574/7681970.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/totopaxitovikeputeb.pdfIn PDF document text
    • https://site-1036818.mozfiles.com/files/1036818/67095686183.pdfIn PDF document text
    • https://site-1038590.mozfiles.com/files/1038590/mopexulomupijezozixip.pdfIn PDF document text
    • https://site-1038940.mozfiles.com/files/1038940/wipuxosamavapagarunusiju.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/1/0432/6545/8342/files/chastity_belt_for_women.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/gupibulupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3375/5553/files/evidence_based_rehabilitation_a_guide_to_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4440/1052/files/at_home_electrolysis_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/2580/5724/files/what_does_km_mean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7567/9896/files/36183851842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2654/8389/files/coreldraw_x6_free_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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5E 5004 bytes
SHA-256: 6b1a35c412cd8b58a03ba7271259e35a2ba4fb001907e0ab154e8992f13c5641
font_01_sfnt_off00007d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D84 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off00008614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8614 10564 bytes
SHA-256: 1755e10f49e0001498b694beceee1d06946255aaf2e94285c2d8d66675eafbec
font_03_sfnt_off0000aa46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA46 16164 bytes
SHA-256: 0646a63a478fe53468b8dbbe05b608d617a04836cde27f490c8d0ce00ae8a9f2

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