Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48a5ad325aabe18…

MALICIOUS

PDF

35.3 KB Created: 2020-08-02 19:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503a6a3843739394c295e8569b01fd0c SHA-1: ea7a4310e9bb2c0b99428665ce651d5225a03e55 SHA-256: c48a5ad325aabe1802001214a0edbdc5e4acb446039cb705b0a0b1593af3c577
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body text and embedded links suggest a lure related to downloading a technical book, which is a common social engineering tactic. The primary malicious URL identified is ttraff.ru, which redirects to a page related to 'data communication and networking 5th edition pdf'.

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=data+communication+and+networking+5th+edition+pdf
    • http://files.martykanova.com/uploads/1/3/0/7/130738836/7724436.pdf
    • http://files.historyappreciation.com/uploads/1/3/1/4/131409170/e6321.pdf
    • http://files.thepersonalconciergemn.com/uploads/1/3/2/6/132681576/wotivagusewil-musowilekija.pdf
    • https://cdn.shopify.com/s/files/1/0430/0141/3785/files/bureluxonudunodifonewuvu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/lujoxozosatulosugewodaman.pdf
    • https://cdn.shopify.com/s/files/1/0431/0728/7189/files/felurulemugejutotidukakis.pdf
    • https://cdn.shopify.com/s/files/1/0437/4380/5591/files/79509234115.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0362/files/8350958082.pdf
    • https://cdn.shopify.com/s/files/1/0437/4052/8792/files/31178468532.pdf
    • https://cdn.shopify.com/s/files/1/0435/9038/5823/files/55863300341.pdf
    • https://cdn.shopify.com/s/files/1/0430/9739/1261/files/square_d_200_amp_manual_transfer_switch.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/kukebufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/vomifudufubijovo.pdf
    • https://cdn.shopify.com/s/files/1/0436/7073/2950/files/ffxiv_fishing_leves.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_off00004aab.bin
28d3209a2552512a03fa417f246b457362245d9c39fba3fc8be3d6d522eccb7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAB 5640 bytes
font_01_sfnt_off00005ddf.bin
51b6a62b2d136e176fc8ca10edd8cd4fea076a0bd15cc8c0cc1325c069b1dcbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDF 9976 bytes

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