Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ae30c82c186ba8…

MALICIOUS

PDF

49.1 KB Created: 2020-08-03 04:57:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1662ba78dc603f11befb5aa0013650e SHA-1: 883e33d90c5c80fa016d86f8becc7af04c94c80a SHA-256: 48ae30c82c186ba8143368cc75134b5f703e50d9cb9469f8e70659b2567270a6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to direct users to further malicious content. The document body also contains the URL https://ttraff.com/pify?keyword=graves+preseason+6, suggesting a lure related to 'Graves preseason 6'. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious.

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=graves+preseason+6
    • http://files.esivu.fi/uploads/1/3/0/7/130776720/debigodir-pefojugiduzawe-pozitobor.pdf
    • http://files.taupobaptist.org.nz/uploads/1/3/1/3/131398333/4cf9515e30cae18.pdf
    • http://files.awolclothing17.com/uploads/1/3/2/6/132696063/962545.pdf
    • http://files.srcharleston.org/uploads/1/3/0/7/130739542/samowidi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/72040791872.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/kojabis.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/bonepovuferakasebixejema.pdf
    • https://cdn.shopify.com/s/files/1/0429/4954/2047/files/kigojulasafitupujune.pdf
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/jijasosimapevita.pdf
    • https://cdn.shopify.com/s/files/1/0436/5107/2153/files/bedajageba.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8991/files/sazuvubukeve.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0433/8004/8023/files/wijaxavevamunatomadopupim.pdf
    • https://cdn.shopify.com/s/files/1/0433/2565/3160/files/xudozimupebejapak.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/44407031540.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b7a.bin
b21a4ed14468b836622447a94fddb6b38aa36206240005faea3ce444c8032bf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7A 5028 bytes
font_01_sfnt_off00007ca1.bin
9548cecc9d7df031b25f87d6602acf0e19cd6964031a85a5b83037225710dace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA1 2700 bytes
font_02_sfnt_off00008833.bin
8371c17d782b8acb6f2b52fbaa5e532b531b41535bf8b408167d4c4d24fc3dba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8833 15068 bytes

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