Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb21ef11a43088e…

MALICIOUS

PDF

72.7 KB Created: 2020-08-19 22:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1525dbd7b0442599dfa998ff02fcb055 SHA-1: da1e62cd30f0faa1d08a12e468d757c64f5ed6a2 SHA-256: acb21ef11a43088e405f72a70308c9168e50ffbaf049adfcef10fe31895afbc8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'ecommerce website template wordpress' and the malicious URL. This suggests the PDF is designed to trick users into clicking malicious links, likely for phishing or to download further malware.

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=ecommerce+website+template+wordpress
    • http://pavolero.theenergyalignmentcoach.com/uploads/1/3/2/8/132814930/pigeji.pdf
    • http://files.blackwomenempoweredjournal.com/uploads/1/3/1/3/131379844/6406948.pdf
    • http://files.conflictchange.com/uploads/1/3/2/8/132815220/fuwuketabivolixa.pdf
    • http://files.secondstoryhoney.com/uploads/1/3/1/0/131069766/7c5da.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/aetna_better_health_reconsideration_form_florida.pdf
    • https://cdn.shopify.com/s/files/1/0433/8522/5372/files/glandulas_sebaceas.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8375/files/jamako.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/38216765388.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakoximowukod.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/zedulamowabodotatesowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/sutamuzano.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7104/files/nofidadaruwibepifarakaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/magejuxasokexuninoze.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/51369667421.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e054.bin
e74a2120819044472bdcb7603ef8e70c2b2fc14fb0fe1c5351db862ce3fa4d8d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE054 5408 bytes
font_01_sfnt_off0000f2a1.bin
3738da5ad491cdac22d5ef30d748aec972926a2c1edaf05c31276a0cb134d172
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A1 10244 bytes