Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5072dd8d70753d…

MALICIOUS

PDF

46.8 KB Created: 2020-08-07 08:02:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60c624f6b9e8dc5e43264f1afee7f3df SHA-1: 7c94f0891d3e418e5bce7863c90c68a040ffc6fc SHA-256: 5c5072dd8d70753df6518c7b7eb65a380fd828b76f368a1bb25699aa8062967c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure for users to download content. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm designed to obscure the malicious redirector.

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=english+speaking+book+free+download+in+gujarati+to+english+pdf
    • http://files.bakersfieldbirthnetwork.com/uploads/1/3/1/6/131636941/8fda6.pdf
    • http://files.wallermarchingfestival.com/uploads/1/3/0/7/130739311/xulajotapok.pdf
    • http://files.sjrb-online.com/uploads/1/3/2/7/132740685/2e3d40a13c612.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5682/3462/files/koguxemi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/59856094245.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52665001447.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/strength_of_materials_class_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/farodozuzivegapitafafok.pdf
    • https://cdn.shopify.com/s/files/1/0447/5171/6503/files/aparato_respiratorio_anatomia_y_fisiologia.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/masafezobuxatu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/67688408016.pdf
    • https://cdn.shopify.com/s/files/1/0436/8721/5269/files/lucian_mid_build.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/falaxofonuzogovefebuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/e30_manual_swap.pdf
    • https://cdn.shopify.com/s/files/1/0432/4864/8354/files/pamiwikuvojatu.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_off00007765.bin
8cdd447b25fb6022f213ef6ca9bfc20d53cbf6e616ba090183cf0f5593d0d7cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7765 5632 bytes
font_01_sfnt_off00008a9a.bin
bb72e378355aec15e30ce5b44c7b814d8f6eb8a67ef0fb74f46523e2a4adc10f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9A 10192 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.