Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ac7e6cc0382d4a…

MALICIOUS

PDF

46.7 KB Created: 2020-08-08 14:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99d830283a048efc5215d4d48a94b373 SHA-1: 68f9725623f15976df5ee407b4bf54b5cf6c55a8 SHA-256: d6ac7e6cc0382d4af37286116b3a8a971eccbf869f09eee4a72618de013bf66b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=barcarolle+duet+pdf'. This indicates the document is designed to redirect users to malicious sites, likely for phishing or to download further malware. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=barcarolle+duet+pdf
    • http://files.gopremio.com/uploads/1/3/2/6/132682076/eac43d74.pdf
    • http://files.burdickequine.com/uploads/1/3/0/7/130738738/gopabidixed.pdf
    • http://redanogu.juliehortonphoto.com/uploads/1/3/2/7/132710797/3aa0df9174.pdf
    • http://files.travelar76.nl/uploads/1/3/0/8/130814121/fepixumol_rodagedowi.pdf
    • http://files.bbfcafe.shop/uploads/1/3/2/7/132740270/1151702.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/xirujugeboduded.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/kujopapurisufexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/44531743949.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4996/files/12744501841.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/9321575663.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/petabukubikipur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/jazijudovojalowulisigabuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/9141/7495/files/movies_in_saginaw_mi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9572/8029/files/er_ir_preterite.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/41704503918.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079f3.bin
57d6500b160991dd0d682c6de95dcfd7620eef0cd1b7b3c4e82a5dedfc33aedf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F3 5020 bytes
font_01_sfnt_off00008b17.bin
d39e85072868f8f1691758ead3f24aed804ab1b7aa9642312e7f3c961c22f6a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B17 10120 bytes

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