Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea6f9e924370dbd6…

MALICIOUS

PDF

40.8 KB Created: 2020-08-21 09:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa66ab66c92c5c6dd358525869435e2e SHA-1: ab05a730e62e93dd36af0224ece86fed99a133e0 SHA-256: ea6f9e924370dbd6e835105602489d4a8515763b0a8751d845510f8205bed249
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the same URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to improve SEO for malicious content or to host a large number of lures. No scripts were extracted from this sample.

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/pify?keyword=greenland+ice+sheet+map
    • http://todixodo.gingerdaniels.com/uploads/1/3/1/6/131637881/2032844.pdf
    • http://files.leewen.republicofdaydreams.com/uploads/1/3/1/3/131384127/bedewe.pdf
    • http://files.historyisthehook.com/uploads/1/3/0/7/130775888/sopexazidunowi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/convertir_de_a_word_online_gratuito.pdf
    • https://cdn.shopify.com/s/files/1/0434/5682/3453/files/adding_algebraic_expressions_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/76381485563.pdf
    • https://cdn.shopify.com/s/files/1/0432/5815/1070/files/33851524351.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/86060847569.pdf
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/similarities_between_presidential_and_parliamentary_system_of_government.pdf
    • https://cdn.shopify.com/s/files/1/0432/8318/5832/files/wesebupotalizebatigujugaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/kedixolonexitosiladoroj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/bizujijetoxadiv.pdf
    • https://cdn.shopify.com/s/files/1/0440/9357/1224/files/yah_trick_ya.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7670/files/consolidated_report_meaning_in_tamil.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_off0000618e.bin
880ce49f4f5d0c52c4d5c0e7b20ccc517bc0cbd6e50fd39823c78b67d5fb9aa3
pdf-font-stream PDF embedded font (sfnt) at offset 0x618E 5344 bytes
font_01_sfnt_off0000738a.bin
10dd57ecb0539a1d7122d48ccb9d5f580683f50584319d2cee8422f7116f4338
pdf-font-stream PDF embedded font (sfnt) at offset 0x738A 10308 bytes