Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45fabfa9b2ff738…

MALICIOUS

PDF

40.2 KB Created: 2020-09-06 01:08:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b27fa341e32068c71f6f568fb521a5f1 SHA-1: f029afbc552edd6a1c427ad5c47d5cec3a02492e SHA-256: e45fabfa9b2ff738a9130468844fe21a6e24cc5ab9d940e4d498321e38c0b2b9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.link'. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm, with many pointing to benign Shopify-hosted PDFs. The primary malicious URL is a redirector that likely leads to a phishing page or malware download. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.link/pify?keyword=smart+goals+for+students+worksheet In 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/1/0432/9209/8716/files/bapuferuvexogujedakopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/99258937857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0058/files/40719245546.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/66f7a0_84f5eb99069743aa85c46a00fe029f00.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e2b09b_ba28f7b3e7074be584fd12e73e0bb16c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/miveguje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9279/3757/files/bhola_hai_bhandari_song_remix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9950/3257/files/acheter_le_guide_du_routard_philippines.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/de60da_c0631021b50442fab8eb379a1daf1722.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_951804e42c4042118ffa12fd06bb8eed.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/edb4a7_4bc2aabbc8474f3285a8d1a7c8108a0d.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_off00005ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 5580 bytes
SHA-256: 3a7c4f490537695b16ed663ea66b1cde180552ec8fa1fa8216d17ceb2d22c399
font_01_sfnt_off0000717f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x717F 10192 bytes
SHA-256: a1cf30c59dbf8d2cdba027858b143649356251ddcc11ec9676763adf6b22307b

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