Malicious PDF — malware analysis report

Static analysis result for SHA-256 325dc08a4319d5b7…

MALICIOUS

PDF

39.1 KB Created: 2020-08-06 08:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94344a8ad6484458a15e29850815ae0e SHA-1: 0a3467ac07cec921b2a2505350c8f4055ba9a6bf SHA-256: 325dc08a4319d5b77b8bb88756bdba9d5f523f3af7fef9e978ef066c8b965705
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One prominent link, 'https://ttraff.ru/pify?keyword=albanesische+studien+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/pify?keyword=albanesische+studien+pdf
    • http://files.sylviarockwell.com/uploads/1/3/1/4/131483019/zuduvofud.pdf
    • http://files.brunnernh.com/uploads/1/3/0/8/130813612/1bd70535.pdf
    • http://files.alexis5dollarbling.com/uploads/1/3/0/9/130969966/4232a38b.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9303/files/21688650651.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31931154882.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/indian_calendar_2017_with_holidays.pdf
    • https://cdn.shopify.com/s/files/1/0428/0667/3575/files/58385581105.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/58479904445.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/36306968123.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/56228248411.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/almost_adulting_arden_rose.pdf
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/3885063812.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/top20_punjabi_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/3934/2248/files/wufogu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/27506609841.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/biwojesezetunuriladax.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_off00005755.bin
abe91a276b53d5982546375bc32a647e6aaac5b78664abb947a760570d5951cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5755 5276 bytes
font_01_sfnt_off00006943.bin
9d24461873a5898848216702eb2c23f5498c6c083f53667c368ae4e1373c1c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6943 11356 bytes

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