Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0db507fd634e11…

MALICIOUS

PDF

44.8 KB Created: 2020-09-16 14:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f088eaa89e15d541c60a9fc406dddf0b SHA-1: c3b429d40f0154791c93ec890e580d17b6866d94 SHA-256: 9e0db507fd634e1173fbf05d876f629b74b4ab36db06c30cc648d24dd4f6e763
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'The beat generation box set' and the malicious URL, suggesting a lure. The PDF also hosts a link farm pointing to various PDF files, likely for SEO manipulation to improve search engine ranking and visibility of the 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.me/wix?keyword=the+beat+generation+box+set
    • https://cdn.shopify.com/s/files/1/0459/9663/8365/files/49796053914.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/4181100613.pdf
    • https://7a221697-c01e-4491-bd24-5d5c89f1c459.filesusr.com/ugd/6f9b04_abedc7b1175343179952340a1f01c739.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/livro_admiravel_mundo_novo_completo.pdf
    • https://cdn.shopify.com/s/files/1/0438/9001/6424/files/27975509475.pdf
    • https://cdn.shopify.com/s/files/1/0438/1392/9122/files/plantillas_portadas_para_word_formales.pdf
    • https://cdn.shopify.com/s/files/1/0432/1289/8461/files/vabinonopaparope.pdf
    • https://cdn.shopify.com/s/files/1/0460/5643/9963/files/information_about_tarte_cosmetics.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065c1.bin
6716fdb3a677100952bc797ad8e9e2e872a2b6621af93077cd23409f4a4a2d96
pdf-font-stream PDF embedded font (sfnt) at offset 0x65C1 4860 bytes
font_01_sfnt_off00007637.bin
5f1af2a19d43026108efe2271d9d192f3393fca59d017e5eb60a689e24bf883d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7637 10092 bytes
font_02_sfnt_off000098c1.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x98C1 4324 bytes