Malicious PDF — malware analysis report

Static analysis result for SHA-256 16e6690adbd2712b…

MALICIOUS

PDF

43.6 KB Created: 2020-08-08 16:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6958c1b81b3d2c61d171706c8b96599c SHA-1: 50d75521203ee1168f2870307fc51785f1d0289a SHA-256: 16e6690adbd2712b71eafd494db75db1baccd84797089734027168653364ea26
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including a primary redirector URL, designed to lead users to external content. The document body, though heavily obfuscated, contains text suggesting it is a search result for a book, likely a lure to encourage clicks on the embedded malicious link. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL points towards a phishing or scam attempt.

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=a+week+in+winter+maeve+binchy+pdf
    • http://files.brazossunrisefarms.com/uploads/1/3/2/6/132681685/diwodugedegumu_lilug_jumojofe_sagem.pdf
    • http://fedivajal.rocoveryfitness.org/uploads/1/3/1/4/131437987/gupovusagokinokul.pdf
    • http://files.wesleyheightsliving.org/uploads/1/3/1/8/131856134/1298787.pdf
    • http://files.clsportswear.com/uploads/1/3/1/3/131380688/zovaloximixi_rotasifowawel_mikomobo.pdf
    • http://files.teachaloha.com/uploads/1/3/1/3/131378868/xejujelasig_legovedaxi_rerux.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3345/1944/files/raxagaku.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/nolezogi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7706/5121/files/zonorazubipibuzu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/62652878735.pdf
    • https://cdn.shopify.com/s/files/1/0446/8441/1033/files/sk_comprehensive_barangay_youth_development_plan_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/89121279047.pdf
    • https://cdn.shopify.com/s/files/1/0434/6442/5634/files/tonogitetadiwapamukeke.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7074/files/xixipelivukisewinis.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/wagivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/dugofakikivenap.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/82590824654.pdf
    • https://cdn.shopify.com/s/files/1/0433/5462/0059/files/difosul.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/91122597371.pdf
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/gezeduxevamazizifip.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_off00006a7d.bin
cb4442217336f76792cbc90b0de7e81c86d517748627004e1c51ce0920fd1b09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7D 5632 bytes
font_01_sfnt_off00007d9c.bin
18fbd0eee94f2fdc378a4e22b12ff23d38b0ca6fac82874b3d827d88380a98d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9C 10336 bytes

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