Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a752276d7a38fb7…

MALICIOUS

PDF

46.4 KB Created: 2020-08-30 23:14:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27f690fc162760afc472307454f0a077 SHA-1: f4c36da9c6a316d1026de7a80c83629f6580be10 SHA-256: 0a752276d7a38fb7838225bd8e951cd1fb02dda3c09fd44bb9cf3b055e16ea43
154 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which is designed to lure users into clicking on further links. The document body text and embedded links suggest a social engineering pretext related to downloading music. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm strategy to obscure the malicious redirector.

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.cc/wix?keyword=how+to+download+music+on+my+mixtapez
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/motilabotababagorizo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5431/8239/files/iphone_2g_price.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/telugu_mantra_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/fagovewokelexanunamadin.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2092/files/ocean_breeze_air_conditioner.pdf
    • https://static.usrfiles.com/ugd/b916f4_e757f82c708c4e3e90d55033854bceda.pdf
    • https://static.usrfiles.com/ugd/b8c837_59240b87a2df4a82886d87d09c4257d1.pdf
    • https://static.usrfiles.com/ugd/accd1f_1b54082ad5ce4d9599008ff805e6edd3.pdf
    • https://static.usrfiles.com/ugd/912de2_596e5358b0bb42b49bb8d1c845711572.pdf
    • https://static.usrfiles.com/ugd/cc089a_c8efe6ac80514c4381f9a4b57ba63f90.pdf
    • https://static.usrfiles.com/ugd/3f0e57_114ab32762d14afbb08126852205d101.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a35.bin
55ac6a5048856e25035294ab49488763a288dc595f325979a0f9e0b78f0854f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A35 5280 bytes
font_01_sfnt_off00007c30.bin
8399b5e5aa28515d0866b80b1c3b3e3834329201bb1cc3371ecd31db2d5c8f28
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 10204 bytes
font_02_sfnt_off00009f28.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F28 4324 bytes