Malicious PDF — malware analysis report

Static analysis result for SHA-256 64378779652bcb90…

MALICIOUS

PDF

46.6 KB Created: 2020-07-31 21:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08a24b9bc0453b6689b112035bb64131 SHA-1: 0bf667129e1618fbdd64ecd619bacd8ac47b7b35 SHA-256: 64378779652bcb9034eed00a9d7f50e46735f5da332cfe06143c07d6d62c5d55
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body also contains a link to this redirector, suggesting a phishing or scam attempt. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or manipulate search engine results. No scripts were extracted from this sample.

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=precious+moments+figurines+value
    • http://files.videofusion.co.nz/uploads/1/3/1/3/131398598/nitunededuxosa-vepojijuv-gopalexolisiz.pdf
    • http://files.guildfordsongfest.com/uploads/1/3/0/7/130740256/setegonipejor.pdf
    • http://files.thepicketline.net/uploads/1/3/1/4/131453917/9955970.pdf
    • http://files.papermagicbook.com/uploads/1/3/1/8/131860787/nelakojopotazedi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/46846219311.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/bajasorelaxulakodo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5646/files/72442499866.pdf
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/24689307005.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/83735749175.pdf
    • https://cdn.shopify.com/s/files/1/0433/7519/8373/files/66501861374.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/34758672101.pdf
    • https://cdn.shopify.com/s/files/1/0440/3711/1958/files/54186416517.pdf
    • https://cdn.shopify.com/s/files/1/0431/3848/2332/files/16600801569.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_off00007914.bin
9861b8c1a89e340f30743467b40252bd4403023aac064f610381eb3ea813aa48
pdf-font-stream PDF embedded font (sfnt) at offset 0x7914 5260 bytes
font_01_sfnt_off00008aed.bin
eabea4d1f426d82a96ae8fa10be1312a372695b5e5567e9350d90d1310a50cd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AED 10164 bytes