Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0842bb6992759e2…

MALICIOUS

PDF

54.5 KB Created: 2020-08-05 17:07:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b127b76a2a70c82525f1d6722c50d42 SHA-1: c8930b6b1b01feb1c0b3336a32818a5a32c80d81 SHA-256: b0842bb6992759e2c302761690a01d9a5064255cb7812a19a05db7942e22afd0
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a primary malicious redirector URL, indicating a phishing or scam attempt. The document body text, though corrupted, suggests a lure related to a 'Mcdonalds franchise agreement pdf'. The primary malicious URL, https://ttraff.com/pify?keyword=mcdonalds+franchise+agreement+pdf, is designed to redirect users to further malicious content. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=mcdonalds+franchise+agreement+pdf
    • http://files.bluscreens.net/uploads/1/3/0/9/130969623/sadixipagozeme.pdf
    • http://files.mindbodyyogaaustin.com/uploads/1/3/0/8/130814393/4c18d1175615.pdf
    • http://files.atexasgirlshome.com/uploads/1/3/0/7/130740231/b45aa4296f9aa3c.pdf
    • http://files.tenniswos.co.uk/uploads/1/3/2/8/132814050/2187594.pdf
    • http://files.alexbaecher.com/uploads/1/3/0/9/130969265/papuse-benabifo-tikemazupabofur-zaresowedepugak.pdf
    • https://cdn.shopify.com/s/files/1/0434/4817/2710/files/recipe_for_disaster_osrs_runehq.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/longman_academic_reading_series_5_student_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/cardiovascular_system_short_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5798/files/mofitegoto.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/35511629706.pdf
    • https://cdn.shopify.com/s/files/1/0436/0437/7763/files/89423706353.pdf
    • https://cdn.shopify.com/s/files/1/0428/5657/9228/files/57648623885.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/penadetowokofinivuz.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/34658569859.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/tv_guide_portland.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/87618016737.pdf
    • https://cdn.shopify.com/s/files/1/0437/3289/3857/files/wohlers_report_additive_manufacturing.pdf
    • https://cdn.shopify.com/s/files/1/0433/2634/1278/files/56621698241.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072b3.bin
644c9df10747ac464e12308317dc732af189df0bca497630867f5a08389e615c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B3 5360 bytes
font_01_sfnt_off000084bd.bin
b326d15f3ba9712216f34472d211450538047665f026d81b2c037543f70b5672		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84BD 10912 bytes
font_02_sfnt_off0000a96b.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA96B 16164 bytes
font_03_sfnt_off0000be84.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE84 4324 bytes

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