Malicious PDF — malware analysis report

Static analysis result for SHA-256 94647a18359aacba…

MALICIOUS

PDF

43.3 KB Created: 2020-08-05 18:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88a853e97a5745afa61ba29ee13c3fa5 SHA-1: 372d6039cd23bb6407784768fb068b61ed4b16d6 SHA-256: 94647a18359aacbad6967c8049f6c6a4c4a3ae7e676d4c9a84c491c8e581a185
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The document body text, though obfuscated, includes the phrase 'Boost testosterone naturally pdf' and a URL that aligns with the malicious redirector heuristic. The presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute further malicious content.

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=boost+testosterone+naturally+pdf
    • http://files.tyretown.co.nz/uploads/1/3/0/7/130739043/96316f.pdf
    • http://files.tspcd.com/uploads/1/3/1/1/131164174/lugizoremokegow_natilitivoj_beguzodu_vapuge.pdf
    • http://files.millbrookrotarydirectory.com/uploads/1/3/0/7/130775846/d99ea.pdf
    • http://files.filamchurchmidlothian.com/uploads/1/3/0/7/130775362/b7a2492e6717fe0.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/nanomitelujuloselila.pdf
    • https://cdn.shopify.com/s/files/1/0447/9506/8567/files/disease_malaria.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/repisuluvurirobub.pdf
    • https://cdn.shopify.com/s/files/1/0432/2787/3440/files/7843228120.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/lolimudifanikiwiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4602/files/jomudusonol.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/41193125828.pdf
    • https://cdn.shopify.com/s/files/1/0429/8647/1587/files/cgst_act_cbec.pdf
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/71127550752.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/net_compact_frameworks.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_off00006c28.bin
98f3b02f4af94fd37de3373474bf8a343fa9d1bcf34e286974665edeba779451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C28 5188 bytes
font_01_sfnt_off00007deb.bin
7b3de97bbedb99e5e2560870d0009fdac7d2160f69fd74af1ee07cdd9d3ccdc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEB 10132 bytes

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