Malicious PDF — malware analysis report

Static analysis result for SHA-256 d18b267a19f98b08…

MALICIOUS

PDF

43.8 KB Created: 2020-08-13 07:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04de8d4200a0926a9e949a4f4f270807 SHA-1: f24fd48d9f11e1f1e85b994a90bce92c66cdaa05 SHA-256: d18b267a19f98b0858e121cd2342c08166bc31a986f50dc73fd293ba550cb2ce
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at ttraff.ru. This suggests a link farm or SEO poisoning technique used to disguise malicious redirects. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its role as a lure. The primary attack pattern involves redirecting users to malicious content via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/wb?keyword=aleatha%20romig%20consequences%20pdf
    • http://files.keeora.com/uploads/1/3/1/3/131379801/migoziturilo-faragazeral-jetekikawetisod-pidivemas.pdf
    • http://files.thebadgemanufacturers.com/uploads/1/3/0/7/130775306/pupukobun.pdf
    • http://files.ritacolemft.com/uploads/1/3/1/3/131398084/pulezoji.pdf
    • http://xabakus.yourcecredits.ca/uploads/1/3/2/6/132680813/mebusaxes-rifikad.pdf
    • https://cdn.shopify.com/s/files/1/0433/6209/1163/files/nodisenubalor.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/kamus_bahasa_arab_indonesia_lengkap.pdf
    • https://cdn.shopify.com/s/files/1/0429/3568/1180/files/bexineso.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/22097798409.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/87643244018.pdf
    • https://cdn.shopify.com/s/files/1/0446/4692/4451/files/curso_coaching_ontologico.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/metaxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0845/7877/files/ielts_academic_reading_practice_test_download.pdf
    • https://cdn.shopify.com/s/files/1/0444/6945/2967/files/jug_of_wine_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0432/7135/6582/files/budgeting_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/zuzibiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/7398/4919/files/zorafaxefugonuzet.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/zuladekosemutasafe.pdf
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/mumaful.pdf
    • https://cdn.shopify.com/s/files/1/0432/9934/0448/files/17531712042.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_off00006b29.bin
f2b2c9c0e7f28947fdf28e4afa69503f297b4dca10312743773dd627362e5d07
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B29 5684 bytes
font_01_sfnt_off00007e54.bin
718b5f8b606ae260af3ce746a94ccbc0df176ee12eb556ee33dd1366673f16fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E54 10620 bytes