Malicious PDF — malware analysis report

Static analysis result for SHA-256 304b53d794271511…

MALICIOUS

PDF

59.5 KB Created: 2020-08-06 17:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0446b8eb0027ed96982c50316170f186 SHA-1: 201666a6da4b34c37c1b44f8fccb9cc68d97ad38 SHA-256: 304b53d794271511f8f824113ef06e90bb9fc2c3bb50ed5ce7e7b66ebe5ec6fa
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link leads to a URL that is part of a link farm, likely for SEO poisoning or to obscure the final malicious destination. The document's purpose appears to be social engineering, tricking users into clicking the link under the guise of downloading a free book.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=peter+lynch+beating+the+street+pdf+free
    • http://files.tamuorphansfund.org/uploads/1/3/0/8/130874612/suvejapotam.pdf
    • http://files.shopdboutique.com/uploads/1/3/0/7/130739742/c5c3acc1813cd.pdf
    • http://files.everlastinglovechurch.org/uploads/1/3/1/4/131437619/duporawojuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/xemas.pdf
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/94185810753.pdf
    • https://cdn.shopify.com/s/files/1/0433/4089/0262/files/13888403388.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/jufamoruvazemusik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/badumilusokunajol.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/siwevidusidufun.pdf
    • https://cdn.shopify.com/s/files/1/0429/4764/1510/files/xuwakuvobiwokobija.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6620/files/51539593557.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7392/files/tiny_model_sugar.pdf
    • https://cdn.shopify.com/s/files/1/0431/5047/5413/files/31361685703.pdf
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/saxatorovubuvoniremesiwa.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_off0000aa57.bin
19be72b2862cb33dff0fa5f6d4f3a85582f5e3ee8200e5ef352f1cd27f1e2139		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA57 5660 bytes
font_01_sfnt_off0000bd93.bin
f9ff57575fdb41e211a9f4182f1b19f0168bc066e7590da3b4b302d2b35d6a71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD93 10448 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.