Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c0ecfde4575472b…

MALICIOUS

PDF

35.0 KB Created: 2020-08-12 13:46:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4af7b2112e98385e44e2149716c2de2a SHA-1: 2f3591da7591a3ab6d0fbbbb0f27b6fc3452d8cf SHA-256: 0c0ecfde4575472b129b369b8eac727670d0cccafc3b4ba81bda31839c18b630
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with the primary URL `https://ttraff.com/pify?keyword=systematic+theology+a+pentecostal+perspective+pdf` identified as a malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=systematic+theology+a+pentecostal+perspective+pdf
    • http://files.hillandstump.com/uploads/1/3/2/7/132740270/8730535.pdf
    • http://files.aromabubbles.org/uploads/1/3/0/7/130739811/venafegozel-zutolanegipaga-terizakelit.pdf
    • http://wetevakit.compliancemastersllc.com/uploads/1/3/1/4/131438405/bufisazufejulozuli.pdf
    • http://wosobo.bellevillewestmusic.org/uploads/1/3/2/7/132710621/dimosirugi.pdf
    • http://files.fuego-flamingo.com/uploads/1/3/1/4/131437117/dd6ae2487.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0081/6028/files/dmv_allison_park.pdf
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/jakodaxozabijigi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/76896323428.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/wulifexonavapavawaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9814/2875/files/suffixes_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/urie_bronfenbrenner_ecological_systems_theory.pdf
    • https://cdn.shopify.com/s/files/1/0431/0961/3725/files/88351049554.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/xetepidadimilar.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/gikegimogenakiroxofisesug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/kufosa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8246/4928/files/mastering_office_365_administration_download.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_off000048b5.bin
dee42f4d6fd5b6591ebc3cb7c4be28c1769cd93512fd7e6bef21c3d1bcdf01f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48B5 5832 bytes
font_01_sfnt_off00005c6d.bin
3fbe13753a27f2d21296ee42309c802dfd4c3e1587773214a410494c676ff6e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6D 10064 bytes

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