Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec77b0390a7367ab…

MALICIOUS

PDF

41.9 KB Created: 2020-08-06 15:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36fd4b0919e5fd196de7a605defbefa5 SHA-1: 970a69dc579baa429a50a755d4c9afcbcb5d020b SHA-256: ec77b0390a7367ab0d88769569d159f1575bedfc8d440ca31616f6f2c49ba541
152 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to 'Eenadu news paper today ap telugu pdf'. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious sites, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct payload execution.

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=eenadu+news+paper+today+ap+telugu+pdf
    • http://wiligixe.northwoodshumanesociety.org/uploads/1/3/2/3/132303374/5767349.pdf
    • http://files.supernovabliss.com/uploads/1/3/0/7/130775458/4393b6d147d.pdf
    • http://files.brendadater.com/uploads/1/3/1/6/131636728/kenaxuza_mesixuvaje_ponugiwemujem.pdf
    • http://files.sluadg.com/uploads/1/3/1/8/131871704/3705502.pdf
    • http://files.dewaalrautenbach.com/uploads/1/3/1/3/131383604/sizuxokebitom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1635/files/tonezidoliruk.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/35197084311.pdf
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/xfinity_norton_security.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/14903061321.pdf
    • https://cdn.shopify.com/s/files/1/0430/7930/3317/files/how_to_convert_to_dwg_in_autocad_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridikesomuzumiburowafex.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/84023619724.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugerivedisabuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/luxosikejexewexako.pdf
    • https://cdn.shopify.com/s/files/1/0438/3339/3309/files/22222695046.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_off0000529e.bin
1e877f5683a8a179d6a7e69596a3beb8d34c90c86282ab59eb072e0ca1aeff5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x529E 5360 bytes
font_01_sfnt_off00006506.bin
54179ef1bc3bcf244a0edbd86f64a7de1936bab0c97fc988e26292588e7b4859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6506 5912 bytes
font_02_sfnt_off000078be.bin
a30a1c7fe61e3e88f2cf378f84cf96eaaea31c7285cd277322861e0d65341932		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BE 9876 bytes

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