Malicious PDF — malware analysis report

Static analysis result for SHA-256 089049e6afa040ea…

MALICIOUS

PDF

41.5 KB Created: 2020-08-17 04:57:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cbc63a6a26fd6166ab4e89cbe0f85a6 SHA-1: 66a140156893eed4aaddb588b2978327a05a19f1 SHA-256: 089049e6afa040ea0e52ad2c44ba0f4f61a2870f4de6c920025a2f733be59408
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure to download further content, likely malicious, under the guise of "Disc personality types pdf". The ML classifier strongly supports the malicious nature of this PDF.

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=disc+personality+types+pdf
    • http://tefodezer.glscentre.com/uploads/1/3/1/4/131453870/6154840.pdf
    • http://rezovop.sewmuchforthat.org/uploads/1/3/0/9/130969536/teraru.pdf
    • http://files.nosaraverde.com/uploads/1/3/1/4/131407051/pezukezisedonix_vadaresov_tetovexilaz_widexavemigorum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/75426912945.pdf
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/10772524477.pdf
    • https://cdn.shopify.com/s/files/1/0432/8429/9936/files/ramsay_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/52508738018.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdf
    • https://cdn.shopify.com/s/files/1/0437/5104/7329/files/65479579032.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/32642848743.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/25633036917.pdf
    • https://cdn.shopify.com/s/files/1/0439/2953/4632/files/leporavazaneponawuwifuke.pdf
    • https://cdn.shopify.com/s/files/1/0440/5015/3622/files/animal_parasitology.pdf
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/pukawisugo.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_off0000641f.bin
d9b71e2aac322d8b2c287540c1192ea1da9722bdced51200d71af976ddedf463
pdf-font-stream PDF embedded font (sfnt) at offset 0x641F 5248 bytes
font_01_sfnt_off0000760d.bin
1a1d797e6a04c91fee85d3d8f9d17490ba46dff7e73fe1c78abffd621651990b
pdf-font-stream PDF embedded font (sfnt) at offset 0x760D 10340 bytes