Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b2bae8110190e20…

MALICIOUS

PDF

51.5 KB Created: 2020-08-31 19:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a657c10515e366f63e4bde8d3a06a023 SHA-1: cd1d0a11f8aa6b98b5c47f0a609fd043a7ade35c SHA-256: 8b2bae8110190e20538aa7985876389987c58d303369a8ef70b8148ec37e9842
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/wix?keyword=avramis+river+indicator', points to known malicious redirector infrastructure. The document body itself is heavily obfuscated and contains this same URL, suggesting it is the primary lure. The presence of numerous other links, many pointing to Shopify domains, indicates a strategy to obscure the malicious destination and potentially leverage seemingly benign hosting for distribution.

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.com/wix?keyword=avramis+river+indicator In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://static.usrfiles.com/ugd/9c0842_46c55af44b81426fbb9dfdc87c638e4a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c1de29_745a761babb14d51b53726b35b9940e3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4dd980_7af225c40b61411ca08f26dea4ddee79.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/98857b_37cd5154bde943ddbc45b6cda3acf780.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_6b6d999c51a34c7996ee9ac66540983d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/getedazigevipokorakorof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4436/4710/files/99512380757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/associated_spring_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2779/9969/files/kefijelumipelemuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/rulers_of_evil_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/55322536588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4914/7816/files/41476878069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/what_is_baseline_survey_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/napopezofawa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9219f8_6db19bc9c9bc4d7ca1ee63e7a5f3c075.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ce14f3_5bc6e75edd3a477990333654be5203e1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_4adedca71c6249a7bcc29ecf813a5d93.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53E3 12140 bytes
SHA-256: bff169657fc63e9cae268a1f25205ba16e4ea6ce578ce0133a273f0c3b729c06
font_01_sfnt_off00007bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB4 5100 bytes
SHA-256: f34290b2d43dc50573cf3c230b60d7ed5a68cf95d203f30c50a79b893082c4b0
font_02_sfnt_off00008ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CED 6092 bytes
SHA-256: b455134215c1f127543c9e9325f175308c359cbf98b278a12a4b01fea3a88c9a
font_03_sfnt_off00009cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC0 10492 bytes
SHA-256: c647bc2e3ce7397c73df13f3e9b3d583aeb655586f1d2f91b68b2baa8e8b906d