Malicious PDF — malware analysis report

Static analysis result for SHA-256 faed8b37500ddd92…

MALICIOUS

PDF

36.6 KB Created: 2020-08-12 16:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec93d74bba5492adef05d9caba630f80 SHA-1: 4ef6dc5b52ccdcb7b87c12fd680c784085e670be SHA-256: faed8b37500ddd92ef72c0ad29092edb42895f8c114e6c130070224632a838d9
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.cc/pify?keyword=a+beginner+s+guide+to+meditation+pdf, which is designed to redirect users to potentially harmful content. The document body, though partially corrupted, suggests a lure related to a meditation guide, further supporting the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=a+beginner+s+guide+to+meditation+pdf
    • http://files.katherinebolynn.com/uploads/1/3/1/4/131437984/b1e7f7624f.pdf
    • http://files.jprintz.com/uploads/1/3/0/7/130739288/roxipumowidijekazeda.pdf
    • http://files.lockmangenetics.com/uploads/1/3/0/7/130775383/nizejab.pdf
    • http://files.ngcym.org/uploads/1/3/0/7/130739315/zosilato-waropuxa.pdf
    • http://files.theflightsimmer.co.uk/uploads/1/3/0/7/130775851/simuzug-juguximo-toximep-vovamuxapijopeg.pdf
    • https://cdn.shopify.com/s/files/1/0437/4007/0042/files/xudolovaliriwunokarivepag.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/44117817545.pdf
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/lebawiwasagenox.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/pibukusekofafujil.pdf
    • https://cdn.shopify.com/s/files/1/0435/7043/0115/files/cache_memory_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0436/7666/3961/files/8470450750.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/batakamuweparo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1130/9719/files/bonatiridudoduvedipori.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70934180934.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/60223393281.pdf
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/kojafunamipota.pdf
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/94376867466.pdf
    • https://cdn.shopify.com/s/files/1/0428/5713/6294/files/20957395677.pdf
    • https://cdn.shopify.com/s/files/1/0454/7198/9918/files/busofijubawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/7557367826.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_off0000524b.bin
a08e0274669c2913e7bcfedf4d37924e5a3e810ddd7131bf92f7b80b2fe459db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x524B 5456 bytes
font_01_sfnt_off000064b2.bin
5efbbc399e1f2314c7a117eb326e99292f549b00aa92b4d098458b0a7b699414		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B2 9356 bytes

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