Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c6213d8f65a7ebb…

MALICIOUS

PDF

47.2 KB Created: 2020-08-19 09:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5293e8052d509dcad6fb520be9fd6a1 SHA-1: f2623c56079ff91dc3ccd5536984cca7fc16b573 SHA-256: 5c6213d8f65a7ebb08fad33dcd8a532898d6cf499290ff307572453d63bdd48d
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and a critical heuristic firing for a malicious redirector link. The document body, though obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=enterprise+architecture+software', which is also listed as a malicious redirector. This suggests the file is designed to lure users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=enterprise+architecture+software
    • http://bipatew.area51scooterclub.com/uploads/1/3/2/7/132740228/sezowanizuwad.pdf
    • http://files.vallenduuk.pl/uploads/1/3/1/4/131483138/suwikuwe.pdf
    • http://files.zeigler-hill.com/uploads/1/3/0/7/130739028/damakolewixipufumed.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/laughing_kid_gif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2658/7549/files/command_line_cheat_sheet_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/0853/2380/files/galaxy_core_prime_rooting.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/vtk_to_stl.pdf
    • https://cdn.shopify.com/s/files/1/0435/5437/3793/files/30621409717.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/bufar.pdf
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/lozewavelagepejofitoxiju.pdf
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/vabobidijepakofakuxad.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1555/files/sofazunidow.pdf
    • https://cdn.shopify.com/s/files/1/0432/9170/5500/files/big_data_tutorial_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0437/8198/0321/files/fajuxorubatederivata.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/58518740180.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d2c.bin
17a0c690b71cebde924217df75c948d1ad55f251ee0390361e521454c7e4817e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2C 5000 bytes
font_01_sfnt_off00007e2e.bin
edaa87e7670861c9bb7a6161f19066107ace5958a4d57f200d020ad894b5cb3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2E 10328 bytes
font_02_sfnt_off0000a177.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA177 4324 bytes

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