Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbcf754f54045594…

MALICIOUS

PDF

42.5 KB Created: 2020-09-20 04:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6d4d02d3cb710500bcc9febdcf8cf2f SHA-1: 6414be682f55a4558d9318f5e6a8e170d5beecd5 SHA-256: bbcf754f540455941436f8b84995cae3f70d9c35bf7a94e7d4ace391454af05a
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The presence of the URL 'https://ttraff.link/wix?keyword=ww+momentum+plan' strongly suggests a phishing or malware distribution attempt. The document body contains garbled text but also includes the same suspicious URL and several Shopify-hosted PDF links, indicating a coordinated effort to distribute malicious content.

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.link/wix?keyword=ww+momentum+plan
    • http://mugasu.acetresearch.org/uploads/1/3/1/4/131437181/tipameledupek.pdf
    • http://files.dustinmarquel.com/uploads/1/3/2/6/132683330/4344226.pdf
    • http://files.rodanthesurfshop.com/uploads/1/3/1/3/131384256/9756209.pdf
    • http://files.valiquet.com/uploads/1/3/2/6/132682585/b5359e.pdf
    • http://files.dgcoachinghealing.com/uploads/1/3/1/4/131438142/mivenerum.pdf
    • http://www.webmilhouse.com/pointcalc.php
    • https://cdn.shopify.com/s/files/1/0435/1796/8543/files/bloodborne_suspicious_beggar.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/hallelujah_piano.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/wukubemogu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4613/2119/files/46302079801.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/certificado_de_origen_tlcan_formato.pdf
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/worksheet_69_area_of_composite_shapes_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1781/files/rugalawipebikunubajaso.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0822/files/47946091709.pdf
    • https://e0f238f7-57dc-4751-a60b-bfc202ad90da.filesusr.com/ugd/23924c_d563016223e54bed9e53f6a601674446.pdf?index=true
    • https://ac0a5cb4-54c1-4a4b-bee8-e679096399f1.filesusr.com/ugd/b41a9a_4146135e85414a05976ad0e95832c4ac.pdf?index=true
    • https://738d2e00-46d6-4b1d-af8f-4a3b20616374.filesusr.com/ugd/f09a9d_3742e3f9ece44ea49450e46693e74db9.pdf?index=true
    • https://461f2d61-58a1-4771-b268-d2cbc3325b25.filesusr.com/ugd/ade4e6_96192061f0e9417c85118d9e8bcba10b.pdf?index=true
    • https://dc2687fc-3f99-45df-87a2-af346f80f487.filesusr.com/ugd/bfd78a_a0a41f965a344f68a9d30af6131a12c6.pdf?index=true
    • 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_off00006943.bin
7f3c061225095b0589ec29b970c9bfccf727a0d15db1cf5c232f21ebf985dd88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6943 4796 bytes
font_01_sfnt_off00007998.bin
81384ee2662d951532b269b7d7bc5da35632a2b593e26659170563b2270bbf50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7998 10536 bytes

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