Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c9a6be8121055fc…

MALICIOUS

PDF

43.2 KB Created: 2020-08-16 12:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f1f0507a0ce7b7dd5c752775de660d2 SHA-1: 278431bc5b2aad0b66c5d783e1824555633041ba SHA-256: 2c9a6be8121055fcf7163c7f26f10213d42472e94362e582714874b3e28c4ef0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a mass link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Research methods in behavioural science pdf' and the malicious URL, suggesting a lure to download a fake document. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the redirection to malicious infrastructure.

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=research+methods+in+behavioural+science+pdf
    • http://files.alphabgroup.com/uploads/1/3/1/8/131871618/durofimorizese-pefekadalimezog-vivobozajakokaj-mimemuvaze.pdf
    • http://ritaxuxat.bobwatkinsrealty.com/uploads/1/3/0/8/130814328/bobuju.pdf
    • http://files.jecreate.net/uploads/1/3/0/7/130775055/390844.pdf
    • http://files.macymariehernandez.com/uploads/1/3/2/7/132740499/godutugaser.pdf
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/commercial_vehicle_insurance_policy.pdf
    • https://cdn.shopify.com/s/files/1/0433/8145/7061/files/50462158948.pdf
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/89975542381.pdf
    • https://cdn.shopify.com/s/files/1/0431/6925/1492/files/chandrayaan_2_upsc_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/worerorojiwezawupilek.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/vufemibatebuzag.pdf
    • https://cdn.shopify.com/s/files/1/0430/8412/0225/files/bukamekabuwulumok.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_off0000693f.bin
a7f0f56a04f7c48fb9f062cfa6883466aaebb31d32836ac9717a28eac5c7fcfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x693F 5604 bytes
font_01_sfnt_off00007c25.bin
9cc22c2b263094d0ef067e5b7d2130017c43e895cdc3e1c421669f59e817e9c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C25 10540 bytes

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