Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f262831c4426b9…

MALICIOUS

PDF

38.9 KB Created: 2020-08-30 17:39:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4693be60c4a5908106aeec34336a3287 SHA-1: e3f0307d1341a7aa775196e375064220cc62eb39 SHA-256: 65f262831c4426b99acb3064f29901311069bb7d60ce127894b5fe4ae5cff59e
174 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to malicious redirector infrastructure, specifically `https://ttraff.com/wix?keyword=maytag+dependable+care+plus+heavy+du`. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The presence of a callback lure heuristic further supports a phishing or scam attempt. No scripts were extracted, but the overall structure points to a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=maytag+dependable+care+plus+heavy+du
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4283/9455/files/environmental_impact_assessment_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0470/6828/3048/files/mary_kay_skin_care.pdf
    • https://cdn.shopify.com/s/files/1/0440/6280/2085/files/ragageku.pdf
    • https://cdn.shopify.com/s/files/1/0431/8511/1203/files/81153765589.pdf
    • https://cdn.shopify.com/s/files/1/0440/1889/2958/files/kexapepudewesefurubu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5190/files/open_file_php_browser.pdf
    • https://cdn.shopify.com/s/files/1/0454/3532/2526/files/beauty_tips_in_urdu_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8569/3079/files/85777115260.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3026/files/gavankar_sheetal_s_md.pdf
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/palidiwavozonasew.pdf
    • https://cdn.shopify.com/s/files/1/0434/4171/7414/files/xipekazoloxewusujukimeter.pdf
    • https://cdn.shopify.com/s/files/1/0438/5210/3845/files/kidawabapeguk.pdf
    • https://cdn.shopify.com/s/files/1/0436/8000/6294/files/wuxizenewevarosat.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9736/files/botim_for_android_2._3._6.pdf
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/butiwakisopipo.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_off000057ca.bin
bab56d43298301ea31c968ee27d59507795065c8cef2eaeacbe4795fc58cb73f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CA 5644 bytes
font_01_sfnt_off00006af5.bin
6bd13612a86d1d00adefb10e8fe623da6f189ee7328683c19cab2944c1a06f09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF5 10380 bytes

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