Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7d70c62339a5f7…

MALICIOUS

PDF

44.6 KB Created: 2020-08-08 05:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80ac63cdb55a8e3d3b43b9cfe7034de0 SHA-1: 3727ffb4c6f7a0ee6800a6606a75125438fe45d4 SHA-256: 0e7d70c62339a5f713c47b0a3eda22d775d9dad4c8ea2178565bb64b6d0f3ce6
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to benign Shopify URLs, but one critical link redirects to a known malicious domain, ttraff.com. This suggests a link farm or redirection scheme designed to obscure the ultimate malicious destination. The document body, though heavily obfuscated, contains the text 'Anatomy handbook pdf' and the malicious URL, indicating a lure to trick users into clicking the link. No scripts were extracted, but the presence of malicious redirectors and a large number of outbound links points to a phishing or scam attempt.

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=anatomy+handbook+pdf
    • http://files.ibstonecircle.co.uk/uploads/1/3/0/7/130776895/8591438.pdf
    • http://files.scottkelleycomedian.com/uploads/1/3/1/4/131438353/f29bbcba3b7.pdf
    • http://bedanewew.onlineforensicscamps.com/uploads/1/3/1/4/131407148/xodadoteraroxal.pdf
    • http://files.skateprincegeorge.com/uploads/1/3/0/7/130776611/6073590.pdf
    • http://files.renoraces.com/uploads/1/3/0/8/130873839/766773.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/23286534232.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/35810585082.pdf
    • https://cdn.shopify.com/s/files/1/0430/8438/2357/files/1499706550.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/colloquial_egyptian_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaxigosileworu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/jifazamomimami.pdf
    • https://cdn.shopify.com/s/files/1/0433/8666/7158/files/61374115718.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/95813482169.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8333/files/rijelulepelafaruleni.pdf
    • https://cdn.shopify.com/s/files/1/0437/9289/2053/files/zulavirilesilowexadasase.pdf
    • https://cdn.shopify.com/s/files/1/0433/5684/8282/files/75308609194.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/antrenmanlarla_geometri_cevaplar.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070dc.bin
7770ce8073222fb81845077b57270377db9a599abe20c0e7df2db0f4282d5bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DC 5268 bytes
font_01_sfnt_off000082ab.bin
5c1665bafa21597d39c621cf5a2aed77798f5c72b11baac6af0b143ff10b2311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AB 10072 bytes

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