Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e1c67632c0c477…

MALICIOUS

PDF

52.5 KB Created: 2020-08-02 12:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df36a663c00a4eb360dc7b9c90a95dcc SHA-1: ba9f1ef26e237b800c011ba960c2518e01e693ef SHA-256: 10e1c67632c0c4774797fac7e28dbde0c555aad765a629fb6762574f1fcc2bab
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=charmaine+harris+swarthe', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing.

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=charmaine+harris+swarthe
    • http://files.jgmizrahi.com/uploads/1/3/1/4/131453054/6937802.pdf
    • http://files.johnscreekchorus.com/uploads/1/3/0/9/130969591/pabunudoxamuweg.pdf
    • http://files.grandcelticpipeband.com/uploads/1/3/2/6/132681910/40dea29.pdf
    • http://files.gladstoneluthiers.com/uploads/1/3/2/8/132814898/delezuzevo_nirilokozeleruv_terenozifamoji_dekufowe.pdf
    • http://files.bodyvolvefitness.com/uploads/1/3/0/7/130776542/8803593.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/7218/4732/files/59997897966.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2778/files/36844285972.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/50715933094.pdf
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/sobukewitawofuzerivasinix.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/jetapivifexamomu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/jiziwepogopekesafegemasip.pdf
    • https://cdn.shopify.com/s/files/1/0436/0034/7299/files/70236733771.pdf
    • https://cdn.shopify.com/s/files/1/0434/6658/8325/files/bufipazubopalu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5071/1705/files/vumutegijekubakogej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdf
    • https://cdn.shopify.com/s/files/1/0431/1089/1676/files/36472598466.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/71264385733.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/lekiriwivofuvag.pdf
    • https://cdn.shopify.com/s/files/1/0434/4102/9276/files/6683906662.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d73.bin
32e564422abcc89b7d26edbe38bc1b59a15a6d91c49e2767f6a89fcb2db9070d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D73 4684 bytes
font_01_sfnt_off00008d3a.bin
7db53c961ae0be33048e305154fdc85f694b78874aa7a87c08072f6ddf4c6eb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3A 13068 bytes
font_02_sfnt_off0000b635.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB635 4324 bytes

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