Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6e2840b64f989d…

MALICIOUS

PDF

45.9 KB Created: 2020-08-14 08:51:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 957b5f5cf18866d04631f13195bf8a60 SHA-1: af4f900b188ee5f69ec4c562e19cf57dd3df5893 SHA-256: 6f6e2840b64f989df00f0fb3ad1920ebe52674366d38f16261311ca53248aef8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector. It also hosts a large number of other PDF files, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, and the document body is largely obfuscated, making it difficult to determine the exact payload or further stages.

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=nutritional+information+100g+cooked+chicken+breast
    • http://ladarim.aolaniaustralianshepherds.com/uploads/1/3/1/4/131452954/rozeriwow_luxamogi_pusejibalubisa.pdf
    • http://files.bottlealleytheatre.com/uploads/1/3/0/8/130874122/boraresases.pdf
    • http://files.kidscuriositylab.com/uploads/1/3/1/3/131379650/7e6e1fb05b24b.pdf
    • http://migesu.mylendernow.com/uploads/1/3/0/7/130738721/zuzewagura.pdf
    • http://rizubeg.reneedavis.org/uploads/1/3/0/7/130739196/9159921.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xarapidarobumebavo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1174/2628/files/60400353309.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0997/files/vasesifiti.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/zidamefutakebodigepoxiwek.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/jaridenefarawuzim.pdf
    • https://cdn.shopify.com/s/files/1/0429/4855/9004/files/fichas_para_aprender_espaol_para_nios_extranjeros.pdf
    • https://cdn.shopify.com/s/files/1/0449/9865/6158/files/canonical_correspondence_analysis_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/vehicle_year_model_interchange_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupesoxozuwimufuvijolus.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/jupedijugodutesotot.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/tutijez.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/4464891425.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000664a.bin
3c5f8decf048566b6059e16a830971cec1f8dae363b48f585dfcb84a7577c043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664A 5684 bytes
font_01_sfnt_off0000796c.bin
d8de2809e3b0338ab256b20993c3bd9bf35ef71fbdecf169b7ea38320bbfde88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796C 10196 bytes
font_02_sfnt_off00009c06.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C06 4324 bytes

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