Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0399d1545a2141…

MALICIOUS

PDF

40.1 KB Created: 2020-08-15 08:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d263c8f498ecda7843010e9f42e815e2 SHA-1: f6d4916d496a182b9aa8887a31e78cf55fdbb64d SHA-256: 7b0399d1545a21414e6f6fee566bdb056423827d95837bf23451ad6702922a09
162 Risk Score

Malware Insights

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

The PDF contains a lure for a 'Forex candlestick pattern indicator free' which redirects to a malicious URL. The document body and embedded link structures indicate a phishing attempt to redirect users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=forex+candlestick+pattern+indicator+free
    • http://files.marco-pelliccia.com/uploads/1/3/1/4/131483281/1962849.pdf
    • http://niruxe.mytechiebuddy.com/uploads/1/3/2/3/132303374/2270498.pdf
    • http://files.capturingportsmouth.com/uploads/1/3/1/3/131378943/joveronewusu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/the_awakening_and_selected_short_stories_by_kate_chopin.pdf
    • https://cdn.shopify.com/s/files/1/0429/3014/3395/files/ajax_jquery_form_submit_php.pdf
    • https://cdn.shopify.com/s/files/1/0432/1574/9281/files/25089092283.pdf
    • https://cdn.shopify.com/s/files/1/0436/8157/9161/files/tigrillo_palma_paloma_azul.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0675/files/brothers_in_arms_apk_and_obb.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/gizuzitebevu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/vebib.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/74024090539.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/gunajokonariru.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_off00005fcc.bin
87a3be6052771795537fd5e7ffe43db0e830dd51cc14ccba3da842db4a96c79a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCC 5236 bytes
font_01_sfnt_off000071b0.bin
cf72406c02b9a99f0f91a9de98c493bc5d90d48380a61c927d40bcf84eec2e2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B0 10012 bytes