Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdf970e9e9209dfe…

MALICIOUS

PDF

33.1 KB Created: 2020-08-05 05:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b3eef18f89ba318c4e630e3f0e5fca5 SHA-1: 39868d28ca25bb9a0cbda2e3b5da2450603dd3cc SHA-256: cdf970e9e9209dfe0f36e2691e1ee0b55ca2312c8698448ceddfd280ad4ce3ea
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains text related to 'acting out culture 3rd edition pdf free download' and the malicious redirector URL. This suggests a phishing or scam attempt to trick users into downloading potentially malicious content disguised as a legitimate 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.cc/pify?keyword=acting+out+culture+3rd+edition+pdf+free+download
    • http://files.mauthouq.com/uploads/1/3/1/3/131398195/abfb18c04a7.pdf
    • http://jibiger.drissmanlaw.com/uploads/1/3/0/8/130814058/runezesexutafudam.pdf
    • http://files.abellcable.com/uploads/1/3/0/7/130740391/vubupikepita.pdf
    • https://cdn.shopify.com/s/files/1/0437/8702/6590/files/numpy_normalize_vector.pdf
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/tupefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/afrontamiento_ineficaz.pdf
    • https://cdn.shopify.com/s/files/1/0436/5749/4693/files/52842511960.pdf
    • https://cdn.shopify.com/s/files/1/0438/4443/6128/files/pokanabefa.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/xinaxik.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/jonumaroraf.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/xijovakozejeba.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/tutuzafimebajapovi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2195/1391/files/calculus_of_a_single_variable_larson.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/15872291545.pdf
    • https://cdn.shopify.com/s/files/1/0436/2797/0718/files/vancouver_wa_weather_15_day.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/beraposununijexog.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_off0000447c.bin
b37a4c47230da08d3a62dd5c95b6a56242d95d3cca2e775c0ec0f44c47da6e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x447C 5392 bytes
font_01_sfnt_off000056f8.bin
d0b9b7ea5a1515f6f77d9e0d66b1059adb0d2464fd9e52f13051508030deb1ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F8 9420 bytes

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