Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3844a46f026f38f…

MALICIOUS

PDF

54.0 KB Created: 2020-08-24 12:37:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d7a45f1c7eb159ab4f15b9b18ebcc6f SHA-1: 9bedd4e3c65a077978a9a1305f02dc0cb7f69855 SHA-256: e3844a46f026f38f08f2aebfa9b1ee6e6de6f89d9cbbd46442a89afe0346caff
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a link farm or SEO poisoning tactic to lure users to malicious content. The document body, though heavily obfuscated, contains the malicious URL, indicating an attempt to disguise the malicious intent. No scripts were extracted from this sample.

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=piriformis+muscle+syndrome
    • http://files.classyandsassyvintagejewelry.com/uploads/1/3/2/7/132740723/690220.pdf
    • http://files.d-dphotography.com/uploads/1/3/0/7/130775958/35281.pdf
    • http://files.mckenzieareadayhomes.com/uploads/1/3/1/4/131453894/937327.pdf
    • http://xidik.wheatgrasspublishing.com/uploads/1/3/2/6/132680981/e547940.pdf
    • http://files.cottontownship.net/uploads/1/3/1/4/131438477/kaxalifune.pdf
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/16143643216.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/nuxidavepe.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/kijixilamaxub.pdf
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/puffin_browser_mini_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/adverbios_de_cantidad_en_frances.pdf
    • https://cdn.shopify.com/s/files/1/0439/9444/8030/files/a_dozen_a_day_book_4.pdf
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/aoac_1990_volume_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/0883/5234/files/kosuripifoxanigoxebut.pdf
    • https://cdn.shopify.com/s/files/1/0437/4947/4453/files/jubav.pdf
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/key_peele_east_west.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/50053245450.pdf
    • https://cdn.shopify.com/s/files/1/0433/5593/0783/files/grade_11_university_chemistry_textbook_nelson.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/bullet_journal_method.pdf
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/billie_s_bounce_transcription.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_off00009533.bin
a3b29815778951d0d4385af38a939af1bb66955d26695b4cabd58959f984624b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9533 5060 bytes
font_01_sfnt_off0000a657.bin
79ce0ccf0588bfebc5c3acfe25de2093a5b7c926b4078499be688f56b03e94f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA657 10636 bytes