Malicious PDF — malware analysis report

Static analysis result for SHA-256 034d36360ca7b5df…

MALICIOUS

PDF

48.0 KB Created: 2020-08-17 17:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5245fd2230878c8b5f1eb858ca42202b SHA-1: 48e3d44554de5ba9e1439e264d3279ce2e9d6691 SHA-256: 034d36360ca7b5df8d052705dd214db608e75cefe57def462824e94323e87cc7
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with text related to 'Dave Ramsey budget sheet percentages'. The document also hosts a large number of external PDF links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=dave+ramsey+budget+sheet+percentages, which likely serves as a gateway to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=dave+ramsey+budget+sheet+percentages
    • http://gexasu.bryanlawver.com/uploads/1/3/0/7/130739777/natadijajolam_kivuze_firowobiwo_guvafek.pdf
    • http://zefosoja.valleygraceevents.net/uploads/1/3/1/1/131163559/kogagisizid.pdf
    • http://files.tipimountainminiaussies.com/uploads/1/3/0/7/130739012/2785647.pdf
    • http://files.elegantsavagesorchestra.com/uploads/1/3/2/6/132682820/ravejazamopulaxoge.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/81806598145.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/53385517300.pdf
    • https://cdn.shopify.com/s/files/1/0434/2670/9665/files/14545868559.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/paises_e_nacionalidades_em_ingles_exercicios.pdf
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/another_eden_1._5._500_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0117/files/canning_process_steps.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/81276924941.pdf
    • https://cdn.shopify.com/s/files/1/0451/4581/7253/files/animals_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/52239904778.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/anthropological_approach_to_the_study_of_religion.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/5423413037.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bcc.bin
552dfc600b95d6fe152bbfd09207d6b50ee638758ecc27021532828d143c87ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCC 5756 bytes
font_01_sfnt_off00008f42.bin
92fba1b221138bebdcff214b024e800c47c053f6e99d5033c186015535760238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F42 10452 bytes

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