Malicious PDF — malware analysis report

Static analysis result for SHA-256 60fba81e51c6be31…

MALICIOUS

PDF

51.4 KB Created: 2020-07-29 10:30:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6eb2bd9ff81a3855321050755542379 SHA-1: 4830d92da3ea3a0023d43c54e3919923fff22896 SHA-256: 60fba81e51c6be315a2bedcaec9a60cc93d8b607611d3fb2c7dad3d24581b7ad
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL, 'https://ttraff.ru/pify?keyword=sample+of+qualitative+research+data+analysis+pdf', suggests a redirector designed to lead users to potentially harmful content. While no scripts were directly extracted, the nature of the embedded links and the ML classifier's high confidence indicate a malicious intent, likely related to phishing or SEO abuse.

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=sample+of+qualitative+research+data+analysis+pdf
    • http://files.dustyroadhorses.com/uploads/1/3/0/7/130775292/zeroda_nuzusuna.pdf
    • http://files.donaldebrown.com/uploads/1/3/0/7/130740149/bifaziti.pdf
    • http://files.sweetcorndevelopment.org/uploads/1/3/0/7/130739814/1552040.pdf
    • http://files.prideontheplains.com/uploads/1/3/1/4/131452982/8457773.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/zedajonurekere.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4952854333.pdf
    • https://cdn.shopify.com/s/files/1/0437/9472/7069/files/birumukud.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/nuzomekik.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/figodedini.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/patisupapowijevububuxik.pdf
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/69830092559.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/40697675862.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5309/files/majusipalade.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/nobajanojijekixulisut.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/bijizop.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_off00008817.bin
33f5bf8092dac5388fd51c9087418d6d7bab0321c56485bc22730833aedcba27
pdf-font-stream PDF embedded font (sfnt) at offset 0x8817 5668 bytes
font_01_sfnt_off00009b3f.bin
c1ce23de56f0ed304872cd64a7cfb8ff0c852a388e9e56e0558d953fe96a9474
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3F 10764 bytes