Malicious PDF — malware analysis report

Static analysis result for SHA-256 697840529b9bebf4…

MALICIOUS

PDF

41.2 KB Created: 2020-08-31 14:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34e56eab3e7b51af41087b21c46d6458 SHA-1: 9f68e9c2c1a4fd90f12141a2288e5358b42b5688 SHA-256: 697840529b9bebf46499065fa95517f043498ada279708d6ac77381f208ab824
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Blackstone real estate fund performance' and the malicious URL, suggesting a phishing or scam attempt. The presence of numerous external links, many pointing to Shopify, indicates a potential link farm used for SEO manipulation or distributing further malicious content.

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/wix?keyword=blackstone+real+estate+fund+performance
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/22115642716.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/bbd_ki_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/broadsheet_melbourne_top_restaurants.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/how_to_open_mp_file.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/john_deere_155c.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/66669302608.pdf
    • https://cdn.shopify.com/s/files/1/0460/7108/7268/files/52238116700.pdf
    • https://static.usrfiles.com/ugd/edb4a7_e9b61d16740c426484119cc69dc8939d.pdf
    • https://static.usrfiles.com/ugd/db1da1_1af15cc3f7764e9aae7506bdebf65650.pdf
    • https://static.usrfiles.com/ugd/96bf9d_b0eaf5de9fff4bed9e9419c14ae97d1f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e5adc04bb8e148e19018b756e5eab315.pdf
    • https://static.usrfiles.com/ugd/3ce946_4c9f3f8a097f4079b0195e9389b7b3e4.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/mastering_autodesk_inventor_2015.pdf
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/60749793100.pdf
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/15627120802.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_off000060a7.bin
e7a646ee40dca4d1e8622e154c771bf223025275c59079d945df0344724f2fcf
pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 5416 bytes
font_01_sfnt_off00007300.bin
5e65c83ad6e48f6da3483084e5bc27478c59d3ff0ed30d7f514d7635b0f42602
pdf-font-stream PDF embedded font (sfnt) at offset 0x7300 10824 bytes