Malicious PDF — malware analysis report

Static analysis result for SHA-256 2030a7e61e42862d…

MALICIOUS

PDF

45.1 KB Created: 2020-08-20 05:12:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1f624963e3f1cdb3374055111b03b82 SHA-1: 2d8d644e9486723b0da48a88c1d612537b9333b2 SHA-256: 2030a7e61e42862d50a267bdb07514611c1949a3d015ff36b610e945edfc520a
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or scam attempt. The document body, though partially obfuscated, includes the same URL and references a topic about filing a police report, likely a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or content-spinning operation to improve SEO for malicious content. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=filing+a+police+report+against+a+stalker
    • http://files.ccmein.org/uploads/1/3/1/6/131607075/xusitodizej_benipizabu_bidewolegin_zarela.pdf
    • http://files.southlandvs.com/uploads/1/3/0/7/130776518/6242206.pdf
    • http://files.aldadesigntech.co.uk/uploads/1/3/2/7/132741029/5520625.pdf
    • http://nuzilolos.lawpenrose.com/uploads/1/3/1/4/131453109/jifari.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/90652979843.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2074/files/list_of_companies_in_pakistan_with_email_addresses.pdf
    • https://cdn.shopify.com/s/files/1/0434/7707/4086/files/lupadugunutuzozenelez.pdf
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/getitilesuma.pdf
    • https://cdn.shopify.com/s/files/1/0432/9242/6405/files/85498598118.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/32182857873.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2556/files/writing_academic_english_4th.pdf
    • https://cdn.shopify.com/s/files/1/0434/2425/2055/files/kadambini_magazine_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/bsa_merit_badge_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6016/files/fir_filter_matlab_code.pdf
    • https://cdn.shopify.com/s/files/1/0434/7713/9613/files/59184238984.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/20952603490.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_off00006808.bin
c90190de1e86f6c2897f0cfb624347c0e039e6fe2982c830770e9a9f050b6a99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6808 4908 bytes
font_01_sfnt_off000078bb.bin
46780f9b192f59b3d063b36d801d26f9d1c7e429deecdec9d36919a8097292e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BB 9536 bytes
font_02_sfnt_off0000995e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x995E 4324 bytes

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