Malicious PDF — malware analysis report

Static analysis result for SHA-256 a296824bbc0c994f…

MALICIOUS

PDF

58.0 KB Created: 2020-08-12 16:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68dc4b467c499142d3a10cbb269f2ebf SHA-1: 8a6e22d8b95b29c93c3f9417153cf6535b5c58a6 SHA-256: a296824bbc0c994f7610c8783c9efb03af496ca4e9e302db290af678bf7c7794
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Morfologi rhizopus oryzae pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of a malicious redirector indicates an attempt to lead the user to a site hosting further malicious content or phishing pages.

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=morfologi+rhizopus+oryzae+pdf
    • http://files.m-yes.org/uploads/1/3/0/7/130740551/818072.pdf
    • http://files.wanbha01.com/uploads/1/3/1/6/131637240/vovojijirora_ruvugisatef_bovorumoxejixam_dumozelutafo.pdf
    • http://files.mexpup.com/uploads/1/3/0/8/130814043/1709668.pdf
    • https://cdn.shopify.com/s/files/1/0429/2549/0332/files/malozot.pdf
    • https://cdn.shopify.com/s/files/1/0437/1942/6198/files/dalevox.pdf
    • https://cdn.shopify.com/s/files/1/0440/5372/5334/files/marketing_management_process.pdf
    • https://cdn.shopify.com/s/files/1/0433/9849/6412/files/58635823420.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/doxinepifobexegoguva.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/cbr_test_manual.pdf
    • https://cdn.shopify.com/s/files/1/0445/9918/1476/files/digital_electronics_malvino_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4484/8295/files/vaxigoniliz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/92237074998.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/50412913729.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/25108563685.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5383/files/zakozojoromedifor.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/92275851.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/13442137824.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_off0000a09b.bin
b9ddafdd589c951b1e20aa189e9f2fa87f018396b2abb61b478a39fdfd702d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA09B 5460 bytes
font_01_sfnt_off0000b343.bin
f2bdc15560e1b42db768f57a7b6c209159777f69ef707a0ad7ce4163e0c6c7f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB343 11040 bytes

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