Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff648909b00ac537…

MALICIOUS

PDF

38.7 KB Created: 2020-08-23 16:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a76c9b841afb4c888e0782acf22d28c SHA-1: 964b67005607ea9f7957ca0cd09155c35971b471 SHA-256: ff648909b00ac537c1e947e5f5bf8fc0a7fc9701b0a1f029727d3a983b599e10
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=fishbone+diagram+template+powerpoint+blank', is identified as a malicious redirector. The document body, though partially corrupted, also contains this URL and other Shopify links, suggesting a lure to download further content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

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.com/pify?keyword=fishbone+diagram+template+powerpoint+blank
    • http://doguzojuj.a-tale-of-two-rally-minis.com/uploads/1/3/2/6/132682607/vosolonudifeka-xusolofeninefu-diwofokawunawiw-velox.pdf
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/jipujazixikudiweluk.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/59972558372.pdf
    • https://cdn.shopify.com/s/files/1/0437/1116/8663/files/academy_stars_4_teacher_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/anesthesia_book_for_medical_students.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/1786475882.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/43618573930.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/folafijo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/zanatewevalufepewile.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a19.bin
3ad099a07edd6b160031bc7601c35c479102817a7b8661f942cd0906e653b712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A19 5624 bytes
font_01_sfnt_off00006d12.bin
456af69f646cdd25ba694178c4e53b5a71f738b7410292ba3dcd11201d72fc6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D12 9800 bytes

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