Malicious PDF — malware analysis report

Static analysis result for SHA-256 9063a10a133fd673…

MALICIOUS

PDF

94.2 KB Created: 2020-08-05 02:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1cdc1f5b0088d7a7d2961e675aaeca3 SHA-1: 859349fd951c885b88e7d6a7113b2b26e8f6acc2 SHA-256: 9063a10a133fd673e75b8fcad183a14f14a279da6818530f994a89eb6b3584d7
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, pointing to 'https://ttraff.ru/pify?keyword=advanced+characterization+techniques+pdf'. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm used for SEO poisoning or to distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=advanced+characterization+techniques+pdf
    • http://files.savannahschneider.com/uploads/1/3/0/8/130813965/509066.pdf
    • http://zidaxu.botanicalchildren.com/uploads/1/3/0/8/130874457/2774608.pdf
    • http://files.sandralamouche.com/uploads/1/3/0/7/130739185/wekojewux-xugadimilet-lujiguw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/pamemetexagaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/jubodopapafix.pdf
    • https://cdn.shopify.com/s/files/1/0431/1695/3751/files/tilipisajuxupi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/zuforopajubulimu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/17299827316.pdf
    • https://cdn.shopify.com/s/files/1/0435/2655/3755/files/napiparoforugirofutoga.pdf
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/mesumodifinuropofegaxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/nitijirebomuja.pdf
    • https://cdn.shopify.com/s/files/1/0434/9929/0776/files/kuxitumifalotivitagif.pdf
    • https://cdn.shopify.com/s/files/1/0435/9490/7810/files/fonosinujezotideketakam.pdf
    • https://cdn.shopify.com/s/files/1/0434/7917/1222/files/lafiturowuwepajopusu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/82261427040.pdf
    • https://cdn.shopify.com/s/files/1/0428/4140/7644/files/endogenous_and_exogenous_antioxidants.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6235/files/peletokixu.pdf
    • https://doi.org/10.1002/adfm.202001704
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000115e1.bin
5c7a3a86a07666ffba4343268e4f3d72f12c0f99c1705abb4aa054b2b72b05f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x115E1 5436 bytes
font_01_sfnt_off00012864.bin
8a80673531aa7d2ee8e0c11b2d89654ce76a670b1a51d6959d72be069c25c932
pdf-font-stream PDF embedded font (sfnt) at offset 0x12864 14032 bytes
font_02_sfnt_off000155b3.bin
aabbb95e4258a1bccfe6759090a0a8b97a33e8154131110566ffb2eaa8fdb080
pdf-font-stream PDF embedded font (sfnt) at offset 0x155B3 16148 bytes