Malicious PDF — malware analysis report

Static analysis result for SHA-256 551ea0b8e1a06da1…

MALICIOUS

PDF

42.1 KB Created: 2020-09-07 13:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07ca1ad992cd95abae16baa556b73410 SHA-1: 198ff93b8d9cf6a4527ae73a0246c7fbf632d877 SHA-256: 551ea0b8e1a06da168a47166a31a7e65cb3bdc93bfefe3b6c7cf8341d7c5729b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a prominent link to 'ttraff.club', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'auto backup viber messages android' and the malicious URL, suggesting a social engineering lure. The presence of numerous PDF links, many pointing to shopify.com, indicates a link farm strategy to obscure the final malicious destination. No scripts were extracted, limiting the analysis of direct execution behavior.

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.club/wix?keyword=auto+backup+viber+messages+android
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/cant_hear_anyone_on_discord.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/31372303466.pdf
    • https://cdn.shopify.com/s/files/1/0437/6936/4632/files/antimycotic_drugs.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/47481540125.pdf
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/financial_and_managerial_accounting_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4044/8410/files/renutonagegoderokibazele.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/54474487754.pdf
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/677358746.pdf
    • https://static.usrfiles.com/ugd/097bd5_693ca9a662ae464d8f5fe369dec9799c.pdf
    • https://static.usrfiles.com/ugd/5438e3_d41f6e3c7d4e4e4bb705fa93fae2c9c1.pdf
    • https://static.usrfiles.com/ugd/e3c460_cb3e550dc6d2445f85506b21c041fdf5.pdf
    • https://static.usrfiles.com/ugd/5c139a_b23f318b33cb46cda1623b9938924b40.pdf
    • https://static.usrfiles.com/ugd/48d9a1_0cf2d9dd4f49424fad2abf74f776f6ee.pdf
    • https://static.usrfiles.com/ugd/accd1f_53b9a55571c3453c92b67ada0ae7ae6c.pdf
    • https://static.usrfiles.com/ugd/96bf9d_4c9153c18fe040dcbcef99e24f1e01df.pdf
    • https://static.usrfiles.com/ugd/0aab01_b44b7b904b9b4b36b4ef0ec63ed53587.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_off000065d7.bin
32fc69238f919a9ea62d7d915ed8e527b09a8c6de88226431ee5549fe6731d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D7 5612 bytes
font_01_sfnt_off000078de.bin
67c819bde81a2fa07405c2b0f921520d1488ac1ebc270ba85df85fb8dcfe55cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78DE 10288 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.