Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7cc70de5069c61…

MALICIOUS

PDF

53.9 KB Created: 2020-08-01 03:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aa59c401088c847e17e7d813dd5ce52 SHA-1: fd9de862760ef64293c853f6235f4e1f7838ef7b SHA-256: 4d7cc70de5069c618be25a104ce8d51a13e0000fe80617b4d272f50eeec9facb
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=setup+a+webserver'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to drive users to this malicious site, likely for further exploitation or phishing.

Heuristics 3

  • 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.
  • 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/pify?keyword=setup+a+webserver
    • http://files.endeavourtrio.com/uploads/1/3/1/0/131069824/matidepabez.pdf
    • http://files.chryssyandheather.com/uploads/1/3/1/4/131452846/sonuruxa.pdf
    • http://files.dslvnjny.com/uploads/1/3/1/3/131379189/dd9af1efc2533.pdf
    • http://files.spirithorsekingsburg.org/uploads/1/3/2/6/132696233/12849.pdf
    • http://files.richardgoldsworthy.org/uploads/1/3/0/7/130776611/fakuluzopamus.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/33290183517.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/bugoronoguninotutufi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/57119649327.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/cambridge_ielts_10_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nenipuwewof.pdf
    • https://cdn.shopify.com/s/files/1/0434/7291/2549/files/9037295099.pdf
    • https://cdn.shopify.com/s/files/1/0434/8284/1250/files/puwakegubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/17968730602.pdf
    • https://cdn.shopify.com/s/files/1/0439/4447/6840/files/buxuvadixibemijatinipazo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9812/files/36567109291.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/search_engine_pdf_books.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_off0000873c.bin
ebc193a59f957c647892c7f08b60504dbe8bbdd5256befd0e9ceeb2cff27af11
pdf-font-stream PDF embedded font (sfnt) at offset 0x873C 4792 bytes
font_01_sfnt_off000097a2.bin
28f6880190e5bbb84075c8015251cb74478cdfe2c5caeba7184f8d53b0c798dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x97A2 10816 bytes
font_02_sfnt_off0000bc92.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC92 4324 bytes