Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a5928c3e9367ec…

MALICIOUS

PDF

34.4 KB Created: 2020-08-06 11:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b615284fe8bdf151a3481c94d57cc924 SHA-1: a09c277a4488f8803bacb755574fcf0178cd28d1 SHA-256: 02a5928c3e9367ecef8d38dd1b21e8848d596ba71809ba918e6f1f8291225b77
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one prominently pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=lonely+planet+georgia+armenia+azerbaijan+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on various domains, suggesting a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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.com/pify?keyword=lonely+planet+georgia+armenia+azerbaijan+pdf
    • http://files.kidseventtickets.com/uploads/1/3/0/7/130775257/8253579.pdf
    • http://files.iomcmborotn.com/uploads/1/3/0/7/130739459/6718621.pdf
    • http://files.stickittothestigma.com/uploads/1/3/0/7/130739061/7727767.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1808/2711/files/cazadores_de_sombras_renacimiento_3.pdf
    • https://cdn.shopify.com/s/files/1/0435/9864/3363/files/nepuxitosezinarutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/79786072147.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/41021733836.pdf
    • https://cdn.shopify.com/s/files/1/0435/9100/8419/files/27264701749.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/benuvodori.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/fazasiragivijesu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/gatamamufalipunenawewetax.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/javascript_array_pop.pdf
    • https://cdn.shopify.com/s/files/1/0440/7151/8373/files/rozofuga.pdf
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/88870667220.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_off0000464d.bin
d777984f54d6fc72b39be91546f8b843ead7f2bf936e3deac789ed6c37c2e452
pdf-font-stream PDF embedded font (sfnt) at offset 0x464D 5492 bytes
font_01_sfnt_off00005900.bin
fe4702a1084d667b827f820cc42228d3837f129ff4f485fed85cad714fa7ff53
pdf-font-stream PDF embedded font (sfnt) at offset 0x5900 10508 bytes