Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2df8ab485bbc5ee…

MALICIOUS

PDF

48.2 KB Created: 2020-07-30 10:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 598c6ce33baa1b526d0182d92778c89f SHA-1: 98106b09b08e499ed7e8c739a419a52198d3195a SHA-256: c2df8ab485bbc5ee14ba2a4c28a4e9f2b2d80e468adb1eba1b0239f562617bee
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=artificial+intelligence+seminar+topic+pdf', is likely used to redirect users to a malicious site. Another heuristic identified a link farm structure, with 'https://cdn.shopify.com/s/files/1/0436/6876/6873/files/vekufanuxusinonadene.pdf' being the first URL in this farm. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of these links strongly suggests a phishing or malware distribution attempt.

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=artificial+intelligence+seminar+topic+pdf
    • http://files.mopswestchester.com/uploads/1/3/0/7/130776599/e6a3936.pdf
    • http://files.playtherapyonlinetraining.com/uploads/1/3/0/7/130776267/e653801e0455.pdf
    • http://files.showmedental.com/uploads/1/3/1/6/131637606/rokokatov.pdf
    • http://files.rabunlakestrading.com/uploads/1/3/0/7/130776511/af7213cc3cdd.pdf
    • http://files.warnhamplan.com/uploads/1/3/0/8/130874403/0438f6ecf9c5fa8.pdf
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/vekufanuxusinonadene.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/64169822630.pdf
    • https://cdn.shopify.com/s/files/1/0433/5996/1237/files/runurunebejijaketifivu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4618/1787/files/besas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1109/6221/files/88097698707.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/8290094113.pdf
    • https://cdn.shopify.com/s/files/1/0429/0448/6055/files/8119957964.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9799/files/kujozogi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/wamekaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/54967640755.pdf
    • https://cdn.shopify.com/s/files/1/0439/5764/9566/files/91428664582.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/duxutikavezodi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0583/files/55258052084.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_off00007da4.bin
a75b2ea825321f08dbf115656270f2fd29038e6a07a5263be4abebc3b44d2538
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA4 5252 bytes
font_01_sfnt_off00008f5c.bin
8babef35b7805c8c2a3df46b93fecbb3895b1b17987663b7d60740c294bb3208
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5C 10436 bytes