Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c32bdbc460dc163…

MALICIOUS

PDF

39.6 KB Created: 2020-08-15 02:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ca9500a632e50ad9e325294542c6ab8 SHA-1: a69af95e48e6080474fc5fbe19ba628f1701ebe7 SHA-256: 1c32bdbc460dc163cc4ad858c9e7d1aa8fab8e3f02fbad83acfba76498575dcb
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used for SEO poisoning to direct users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=ytd+video+er+for+iphone+6', is flagged as a known malicious redirector. The document body contains garbled text along with the suspicious URL, suggesting an attempt to disguise the malicious content.

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.ru/pify?keyword=ytd+video+er+for+iphone+6
    • http://files.houstoncalligraphyguild.org/uploads/1/3/2/7/132740949/zewegu.pdf
    • http://jojumu.tracihighland.com/uploads/1/3/0/7/130739140/4e34e3dab73f.pdf
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/ludus.pdf
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/animal_cell_structure.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7736/files/mesobarotodinawijataluzok.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/zupimagolafawuzufuku.pdf
    • https://cdn.shopify.com/s/files/1/0436/2171/2034/files/ds2_human_effigy.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/divi_logo_size.pdf
    • https://cdn.shopify.com/s/files/1/0438/9886/3771/files/charge_of_the_light_brigade_poem_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/9978/3319/files/padaketenit.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0426/files/33646809558.pdf
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/53663529565.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2844/files/clasificacion_de_cavidades_dentales.pdf
    • https://cdn.shopify.com/s/files/1/0447/4866/9079/files/fojofog.pdf
    • https://cdn.shopify.com/s/files/1/0432/2433/4496/files/nudipasizobalodev.pdf
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/56909411520.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_off00005fea.bin
f26539e6a113f1a3946fce1faf6456d0eae221a8f76e21eaa6d4cfe82e29f462		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEA 4884 bytes
font_01_sfnt_off00007086.bin
4074c194e14fff53c526a19a127b23e97f3224d7ffea45a6877bdbbf390cb518		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7086 9652 bytes

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