Malicious PDF — malware analysis report

Static analysis result for SHA-256 465c48be943219a3…

MALICIOUS

PDF

47.8 KB Created: 2020-08-05 13:12:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b3ae16ead7d96b5d66c0fa394b79e39 SHA-1: 1023c2d350de588f1c78e60719d19202b4bf6cd1 SHA-256: 465c48be943219a34004202643d4e19dd434b981c3211a7cbc03f79564b69b86
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to research papers. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download. No scripts were extracted from this sample.

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=assumptions+in+research+pdf
    • http://files.infocartoons.com/uploads/1/3/0/9/130969372/b94406ddbabca.pdf
    • http://siwasoguz.ballerinabites.org/uploads/1/3/0/7/130738731/kikekin_lukuk_bunov.pdf
    • http://files.nauticalreplicas.com/uploads/1/3/1/4/131453894/pegatij-kudinijad-fijeluxubije.pdf
    • http://files.asklisaraimondo.com/uploads/1/3/1/3/131398406/xolowusefe_nemokekosiv_vekejezeni_repiretumuxomu.pdf
    • http://files.mycountrymanor.com/uploads/1/3/1/8/131871705/59f1768610333.pdf
    • http://siwasoguz.balleri
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/maleroburesoni.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/bexuxuja.pdf
    • https://cdn.shopify.com/s/files/1/0446/0986/3843/files/soni_ericsson_w580i.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/20115514074.pdf
    • https://cdn.shopify.com/s/files/1/0432/3799/8754/files/tawuxoriwak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/30604522213.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/xaroferokujeno.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/pebone.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.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_off00007b12.bin
1315bcb63f5ba6b68fe725cc938631c6e1ceb494e98099b358fc698b0707564c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B12 5352 bytes
font_01_sfnt_off00008d1c.bin
2aa26f063ab2638c791f70a4a7bf5ffb0295835d26ff4a26d5a9df996e3f945a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1C 10436 bytes

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