Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe0ca5a4212974a…

MALICIOUS

PDF

41.6 KB Created: 2020-10-15 05:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f306ae49c2c1584947ea3f68d6d6fea9 SHA-1: e1e7429744a470b708f05d429bbb041d7dae494f SHA-256: cbe0ca5a4212974a5150d56658e112c86289363040fa37dd868434aca0f4b939
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.club/pify?keyword=equivalent+ratios+and+multiplication+tables+worksheet In PDF document text
    • https://site-1039797.mozfiles.com/files/1039797/pakodexefate.pdfIn PDF document text
    • https://site-1039878.mozfiles.com/files/1039878/196305716.pdfIn PDF document text
    • https://site-1043120.mozfiles.com/files/1043120/dr_fone_android_sim_unlock.pdfIn PDF document text
    • https://site-1039436.mozfiles.com/files/1039436/22388682057.pdfIn PDF document text
    • https://site-1039153.mozfiles.com/files/1039153/fepokerovol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5f87a24c526d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5f877d011b583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f876ce67cfdb.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/xeronozag.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/1/0500/0976/8086/files/33535534941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4116/3934/files/rujevanesuvinetasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9856/1959/files/19026401515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7672/3887/files/43897015239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d24259-b847-494d-b531-039fff27244d/bugikuxosojoxon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/667557e5-7f88-4c09-856f-248b3e47f9fc/48718204321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc3ca4e-679f-45c2-86cd-deec092e6a9e/33273838369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25acbbb5-6cf6-425a-9d94-ad7ec23ce967/daganeraboruxurati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f68b78f5-c922-4826-92b6-136846229f83/tafadesodekanifagixaraxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3143/6701/files/88995338206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7271/4920/files/92269614877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2006/6209/files/davimitexenafonob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6292/7775/files/pazefagadodoviwinesitej.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_off0000619e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619E 5752 bytes
SHA-256: 64f2329707338acdd7949fe9659d4cf7ef166dbc9d4b82da9ae29d82110f92b0
font_01_sfnt_off00007513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7513 10540 bytes
SHA-256: c98d6531e8f7857bda350aa74941829190fb336171a296fa1d9032c963ecda44

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