Malicious PDF — malware analysis report

Static analysis result for SHA-256 03eb00529297c9ca…

MALICIOUS

PDF

47.1 KB Created: 2020-10-01 21:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 866131412bcaf2251fc5a5657f81c10e SHA-1: e9fca918d49fa2704bad63bd52316e6635aafbff SHA-256: 03eb00529297c9ca0c75ca243d38c59241fe59b0eb0b793ced3ff12ed8f8f906
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/strik?keyword=tcs+service+agreement+filled+sample+pdf In PDF document text
    • http://files.statebirdtogo.com/uploads/1/3/1/3/131382395/a1b0c05f.pdfIn PDF document text
    • http://bemajirod.belizesportsoutreach.com/uploads/1/3/0/7/130775166/fapomi.pdfIn PDF document text
    • http://files.steamworkskidslab.org/uploads/1/3/0/9/130969800/cb46321aa.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/04809380-12ff-4b39-94e0-85f60e2d1181/zojemokunobap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/374463a3-3641-41b4-8da2-ea37c443b965/5618251347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a4503c9-27e7-4e26-947e-80d6c9dc1202/pekave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38063ccf-35d3-49b3-884d-09aeea2ae46b/wusavubunutujabegefobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2556/1757/files/55621242184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4253/5574/files/link2sd_plus_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/ravaxejolidezoparuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/egg_harbor_township_high_school_transcripts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3980/files/8407796589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8398/8125/files/plymouth_parks_and_rec_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8696/5656/files/captain_sobel_funeral.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_off0000798d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798D 5484 bytes
SHA-256: 2503c513a6095d9e25a9d64645a0b0dce2f05eaa919087cd19930a4ed8030312
font_01_sfnt_off00008c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2D 10296 bytes
SHA-256: e6ed3379a244609299d499814952807bbd6e882f2a6a966f416848740c964bba

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