Malicious PDF — malware analysis report

Static analysis result for SHA-256 05239d7b89f5dfea…

MALICIOUS

PDF

40.9 KB Created: 2020-08-09 07:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c4c2acdf60d6c43521268b201b841dd SHA-1: 68633432dc5d0775a4aea4b0dd27306f5578f85a SHA-256: 05239d7b89f5dfea3f49e9cd9770fd5f2cd61c630f4e039868f4bec4d26596af
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to downloading a calendar and a URL that matches the malicious redirector. This suggests the document is designed to trick users into visiting malicious sites, likely for further exploitation or credential harvesting.

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.cc/pify?keyword=descargar+calendario+2020+colombia+pdf
    • http://files.deltafuntime.com/uploads/1/3/1/6/131637239/niguxadube.pdf
    • http://files.hmcsacadiaalumni.com/uploads/1/3/2/8/132814958/59423f891.pdf
    • http://files.fascinobespoke.com/uploads/1/3/1/8/131858975/maxabemurijuzisi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xikidewutuxazumal.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/what_is_my_favorite_food.pdf
    • https://cdn.shopify.com/s/files/1/0432/7197/9171/files/65739164950.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/18000278097.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luzugojozawok.pdf
    • https://cdn.shopify.com/s/files/1/0434/7409/2196/files/vutof.pdf
    • https://cdn.shopify.com/s/files/1/0430/4224/2709/files/zasivofimafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2962/files/manaboladinunorek.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/lowamibijixasavu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/belajar_menulis_alif_ba_ta.pdf
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/51001595357.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/68903240906.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/40787679447.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000502e.bin
fdd26b22de29f0d1aff9ba01067fa610650705001833a79f2166229fea02fe34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x502E 5596 bytes
font_01_sfnt_off00006302.bin
cbe37f49093da54253f0eb83669699ce9ab8e1be9f2ebfb87e3d9540aea8a921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6302 10932 bytes
font_02_sfnt_off000086b3.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B3 4324 bytes

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