Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae14df2f8abd68de…

MALICIOUS

PDF

45.9 KB Created: 2020-08-07 18:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7ef2834177622862f74efd7a910ddb8 SHA-1: f2b80aeb064d9320199f1cb9b67611f68e81fdff SHA-256: ae14df2f8abd68de2d11c4080dc87049be3f847b1208d4826b2e5e79be5abdea
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though obfuscated, contains the URL 'https://ttraff.com/pify?keyword=elasticity+and+anelasticity+of+metals+zener+pdf', which is flagged as malicious. This suggests the document is designed to lead the user to malicious content, likely for phishing or malware distribution.

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=elasticity+and+anelasticity+of+metals+zener+pdf
    • http://files.watips.net/uploads/1/3/2/6/132695582/7115e18a7.pdf
    • http://files.inlinereferencecheck.ca/uploads/1/3/1/0/131069819/gavurixubarujow-fetuvijixe-posori.pdf
    • http://files.union-park.com/uploads/1/3/1/4/131438142/8264743.pdf
    • http://files.salsberyonlinegarden.com/uploads/1/3/0/7/130776619/46d57d03c.pdf
    • http://files.geneseevalleywindensemble.org/uploads/1/3/1/4/131453256/6869450.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/wojekaxexipupekunazivuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/disentri_amebiasis.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/past_perfect_tense_exercises_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/61710783208.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/82803917388.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/31531003166.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18813115042.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/lexekapopibebikos.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/82634931137.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6279/files/86570601633.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/xezegiso.pdf
    • https://cdn.shopify.com/s/files/1/0448/1282/8833/files/composicion_centesimal_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/60743267040.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671e.bin
91acbe0595fcbfc382314686fad2c0c891029a5c1778baa4e2b6701e8c0a429f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671E 5196 bytes
font_01_sfnt_off000078bb.bin
3dc09a4e677cb57cf3cfa55420d049f7f456f02025ecf71c7923e3d67d060ed9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BB 10392 bytes
font_02_sfnt_off00009c57.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C57 4324 bytes

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