Malicious PDF — malware analysis report

Static analysis result for SHA-256 2546b365e4fcac36…

MALICIOUS

PDF

47.1 KB Created: 2020-08-05 07:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b28c04e7665185b9c2564981599d355d SHA-1: e03fb43a1ff74af99d0333c8b0621afd3b43592f SHA-256: 2546b365e4fcac36a8ba1bed8b45f8af0970f8753387fbab43e6514277887555
140 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=cao+beveiliging+2020+pdf', which is also flagged as a malicious redirector. Another heuristic indicates a callback phishing lure, suggesting the document aims to trick users into calling a fraudulent number. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.cc/pify?keyword=cao+beveiliging+2020+pdf
    • http://files.southwestcactusshop.com/uploads/1/3/0/8/130874162/6811847.pdf
    • http://files.crchog.org/uploads/1/3/1/4/131438468/zixupalomo-rebuxiko.pdf
    • http://files.fnaq.org/uploads/1/3/0/9/130969944/nivubuluro.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7319/files/medozosumipokuzuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1245/5591/files/gefewowawoje.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/tekkit_legends_servers.pdf
    • https://cdn.shopify.com/s/files/1/0437/0743/3125/files/81100158533.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/cour_appareillage_electrique.pdf
    • https://cdn.shopify.com/s/files/1/0433/5140/8799/files/61334762116.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/gopusuludusi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49181926903.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/vojifanitarizubemotax.pdf
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/54472501481.pdf
    • https://cdn.shopify.com/s/files/1/0431/8229/3141/files/3583241287.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/fosasuxet.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_off00007870.bin
9906d9ba65af58e0f6c13dafd64e667a18fe8603b0263bd0fed3b3663298a519
pdf-font-stream PDF embedded font (sfnt) at offset 0x7870 5312 bytes
font_01_sfnt_off00008a9a.bin
8a99111ef2e9a71947c23f951058656b1c5d60f5ea27e75ac0bc72a38bddaac5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9A 10780 bytes