Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94aee66187099ba…

MALICIOUS

PDF

42.1 KB Created: 2020-07-29 19:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84c436dc7ab4cce9317cd6e49d93a1e7 SHA-1: 58c3da7c5f006df045badcb4ce93f3a9c461ffbb SHA-256: d94aee66187099ba91a25baebdb5061190c891f53d985e0d5493bda881f86be5
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'Bible study PDF'. The presence of a link farm indicates an attempt to distribute malicious content broadly. The primary malicious IOC is the redirector URL.

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=rvr+1960+biblia+de+estudio+arco+iris+pdf
    • http://files.heavenstinyangels.com/uploads/1/3/0/7/130775373/winesi.pdf
    • http://files.appliedmicronanolab.com/uploads/1/3/2/6/132682561/35cf2628.pdf
    • http://files.abouttimeband.co.uk/uploads/1/3/2/3/132303010/motajepenirejo.pdf
    • http://files.nairnpickers.com/uploads/1/3/1/6/131606743/zinotenep-malununuboxa.pdf
    • http://files.youthfulrejuvenations.com/uploads/1/3/1/4/131482931/938694.pdf
    • http://files.youthfulrejuvenations.com/upload
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/guzikuwanetadilodivo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/81328593303.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6019/9573/files/64979524230.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/4913286608.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/numifig.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/wixoketudaguzo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/64638348431.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2773/files/57839102835.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/sikexobo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/rifomikutuxufokuxikilimus.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_off000061a0.bin
69e31e1bba9714015a8dfe53512e4ab4694f725c040470894ac4bf48e2a6b051		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A0 5636 bytes
font_01_sfnt_off000074e4.bin
b0c8d4bc46197b240e275dd2196d11501617b6e650feff0136ca390daa030eec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E4 11084 bytes

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