Malicious PDF — malware analysis report

Static analysis result for SHA-256 1964ed00ece734bd…

MALICIOUS

PDF

43.2 KB Created: 2020-08-05 06:57:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb160e7ac031f5fb865c60a19a37bacb SHA-1: 68a8a306f6e827247894c8a69feddad669c54319 SHA-256: 1964ed00ece734bd40c0661a3d80ef2c5f882c5b8c9bdae5b58fffd2bf0e6bed
154 Risk Score

Malware Insights

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

The PDF file contains a lure related to natural cancer treatments, but its primary function is to host a link farm. It directs users to a malicious redirector URL, 'https://ttraff.cc/pify?keyword=breast+cancer+natural+treatment+pdf', which is likely intended to lead to further malicious content or phishing pages. The presence of numerous embedded links, many pointing to Shopify domains hosting other PDFs, suggests a coordinated effort to distribute malicious content or manipulate search engine results.

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.cc/pify?keyword=breast+cancer+natural+treatment+pdf
    • http://files.leehanson.net/uploads/1/3/1/4/131483138/326f6162a2875c.pdf
    • http://files.saferescuefordogs.com/uploads/1/3/0/7/130740464/rasopupak_nowidade_wakixitevupobux_nukifuzuvibelaf.pdf
    • http://files.bocadeoro.org/uploads/1/3/0/7/130776680/gagoroba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/4370172242.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31931154882.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/7612454076.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/billy_gene_marketing.pdf
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/lipibijefutalopisanejow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9409/8598/files/44899981879.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8675/files/ruxanigakabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/34443385686.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/gajamo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9423/5553/files/84341922823.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/39601980338.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/ash_greninja_pixelmon.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_off00006b70.bin
3da40c7fb7427efdde9440d8430aaa4b157ce2896ce9ca13ef0ecba33f1aebe3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B70 5348 bytes
font_01_sfnt_off00007d86.bin
9feaeeaf9084dcfc642d033c61e68fc17f80ebcf06aea6be4c740a65eae652e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D86 10084 bytes

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