Malicious PDF — malware analysis report

Static analysis result for SHA-256 084d04498f6f9ae7…

MALICIOUS

PDF

40.9 KB Created: 2020-07-11 18:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc445702e2f8d794078cddd20a24c87d SHA-1: 6f4d7f8c99092be80a2e92bdc4c08354f09b1c4d SHA-256: 084d04498f6f9ae76a14a1d5b631630ffc9e9abd472b17637e7e42a9b819b0b0
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on what appears to be a link farm. One of the primary links directs to a known malicious redirector, 'ttraff.cc', suggesting a phishing or malware distribution attempt. The ML classifier strongly indicated maliciousness, supporting the heuristic findings.

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=pro+wrestling+simulators
    • http://files.barrons-conferences.com/uploads/1/3/1/4/131409170/3066792.pdf
    • http://files.blossomsbygeorgia.com/uploads/1/3/1/4/131438667/xijominezokuzawimet.pdf
    • http://files.jrbcounseling.com/uploads/1/3/1/4/131406075/puruvigur-nofelugazoxub.pdf
    • http://files.datapoints.org/uploads/1/3/2/7/132740181/dovagutobobura-selifidamanuva.pdf
    • http://files.stmarymagdalenewpg.org/uploads/1/3/0/7/130776655/9936640.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://nokimep.files.wordpress.com/2020/07/6847510901.pdf
    • https://sopokep.files.wordpress.com/2020/07/70781469952.pdf
    • https://mavowekike713378800.files.wordpress.com/2020/06/tikavizo.pdf
    • https://vuremaxetil.files.wordpress.com/2020/06/kirivaziruxiweze.pdf
    • https://welukozajo65126768.files.wordpress.com/2020/06/rudowagu.pdf
    • https://moforowikof.files.wordpress.com/2020/06/tujagejirup.pdf
    • https://wiginikinu.files.wordpress.com/2020/07/84142261480.pdf
    • https://zawamibidixa.files.wordpress.com/2020/06/54253203369.pdf
    • https://diwunibe.files.wordpress.com/2020/06/24642910793.pdf
    • https://fobigagebe.files.wordpress.com/2020/06/16050872971.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/46136899675.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/2858327517.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/pifojemimuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/xexigotigebasureliporujod.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/galevomuwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/68672398680.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/27173623749.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_off00006224.bin
8d9967fb9f415739f7b07a19a1326d6146c579a1f2ca476b9d2f91d6098cc808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6224 4980 bytes
font_01_sfnt_off00007303.bin
e256ef264e3b854a54b347b8ea5769bd90e4d66bc7e2d75f963389149d11a564		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7303 10312 bytes

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