Malicious PDF — malware analysis report

Static analysis result for SHA-256 920f8f22c278f1b9…

MALICIOUS

PDF

59.8 KB Created: 2020-08-14 03:36:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64b7eb33a736ae24eec4586b416befdc SHA-1: 3340f0fe2b2a60f8213805d533393f510e2260b7 SHA-256: 920f8f22c278f1b9464d478e69d6c175ca1d87b973da7270f463bff3da83582c
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text that appears to be related to a lottery or prize, aligning with the 'Advance Fee Scam Lure' heuristic. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a further stage of the attack.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=born+to+run+song
    • http://dogage.pennybrumbaugh.info/uploads/1/3/0/7/130740019/pagubalom-limigusosiza.pdf
    • http://mipurux.saralazzaroni.com/uploads/1/3/1/6/131606027/496ee76619ed8.pdf
    • http://files.julianlorr.com/uploads/1/3/0/7/130738956/746891.pdf
    • http://kirar.spotlight-video.net/uploads/1/3/0/7/130739615/6052199.pdf
    • https://cdn.shopify.com/s/files/1/0433/8221/0725/files/fevimelezejozaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/eos_750d_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6069/files/tonapuripag.pdf
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/19150632818.pdf
    • https://cdn.shopify.com/s/files/1/0436/6322/9078/files/limusabogitedubefusikome.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/zipifoko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/35998127831.pdf
    • https://cdn.shopify.com/s/files/1/0434/0822/8508/files/cisco_ip_phone_7965_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5883/0229/files/farmall_cub_manual.pdf
    • https://cdn.shopify.com/s/files/1/0446/6681/4617/files/degradacion_quimica_del_suelo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/29196288667.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/17134927763.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/zutukija.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_off0000ae95.bin
599c7f9094b2125b31dfcb36967547613ea5a4caf3d2932c80e32df3b0874091
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE95 4660 bytes
font_01_sfnt_off0000be83.bin
d2a8eb49df708206b4abbc4ebcc01b406e3503f4d0994cab2057720c50308246
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE83 10428 bytes