Malicious PDF — malware analysis report

Static analysis result for SHA-256 40914c23dfa81939…

MALICIOUS

PDF

43.1 KB Created: 2020-08-27 22:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90ac0f42209974f01853dd647c4891b2 SHA-1: 9f26327bd70312ade3c775500a4cffbd5b40a04a SHA-256: 40914c23dfa81939f24363ae16714bd1f37cd166908fac6454ccf20110d45ad9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.link/pify?keyword=joe+mccall+wholesaling+lease+options', is designed to lead users to potentially harmful content. The document body, though heavily obfuscated, contains references to this malicious URL and other PDF links, suggesting a link farm strategy to distribute 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.link/pify?keyword=joe+mccall+wholesaling+lease+options
    • http://veroxa.ernst-arch.com/uploads/1/3/0/7/130776132/b881083659.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/atmospheric_pressure_and_gauge_pressure.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/niniti.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/pezopasulatimesev.pdf
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/autocad_for_mac_high_sierra_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7668/0870/files/sifevabunezomawugagekan.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/lutekesotewa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/16869460312.pdf
    • https://cdn.shopify.com/s/files/1/0437/2591/4262/files/ielts_fever_reading.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0711/files/rulumisit.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_off00006861.bin
514f8e38f05b74c5b8c68b0cd1bd0cd33128bee2ecf9129b0b073b5d54290c80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6861 5332 bytes
font_01_sfnt_off00007a78.bin
e5f2c411fa1e6be66fdbba58b23c50aeba3ed544415d20072057c4b84bf92be3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A78 10968 bytes

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