Malicious PDF — malware analysis report

Static analysis result for SHA-256 e218dac370bac3c2…

MALICIOUS

PDF

47.3 KB Created: 2020-10-12 09:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 40b1af606f0e60abd14666d05daca761 SHA-1: 60c83f59b9891bd738d55173b0baa242df809f9f SHA-256: e218dac370bac3c246ca4fc9ee4c379ab4f76ed92ada0f9ab858cbcce1270587
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.club/pify?keyword=alljoyn+router+service+reddit, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. 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.club/pify?keyword=alljoyn+router+service+reddit In PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/muwevox.pdfIn PDF document text
    • https://site-1039209.mozfiles.com/files/1039209/pejosimufeku.pdfIn PDF document text
    • https://site-1038691.mozfiles.com/files/1038691/dawodedozepevexepo.pdfIn PDF document text
    • https://site-1043215.mozfiles.com/files/1043215/54838753117.pdfIn PDF document text
    • https://site-1039992.mozfiles.com/files/1039992/vusilafekojusara.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/96799336250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6163/5991/files/kawuwevusejexito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0657/6800/files/golf_league_tracker_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/36347833259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8460/3801/files/94359387743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7001/6673/files/gorofisigekamemavadam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/98208316941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1605/2126/files/jolees_easy_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/44234152210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2874/1803/files/76994084587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0679/0296/files/narenu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A57 4952 bytes
SHA-256: 95cf30fc019c97783e23847fd7dd536f53695cef90a5f7fa54f8377459e98ff5
font_01_sfnt_off00008b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4D 10648 bytes
SHA-256: 959fcdbe25e403c1c157bfad87e0f90088c777037bb3d85717f663705fa66502

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