Malicious PDF — malware analysis report

Static analysis result for SHA-256 17da27236331f55a…

MALICIOUS

PDF

43.0 KB Created: 2020-10-03 06:34:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fd2cf3ca6939b4fbff88b6d56d5a0513 SHA-1: 76fbe8820c5cf9574289a972bc02a6bb2b7206ef SHA-256: 17da27236331f55a40278e22e040818fac9fd67fbf7551ab18bbb4c9d1f8b202
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm designed to manipulate search engine results. The embedded URL https://ggtraff.ru/pify?keyword=chevron+cars+commercial is the primary indicator of malicious intent, likely serving as a redirector to a phishing or malware distribution site.

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://ggtraff.ru/pify?keyword=chevron+cars+commercial In PDF document text
    • http://files.tiga-project.com/uploads/1/3/0/8/130874110/rafakusovojiga-zizezog-mipas-rulezilax.pdfIn PDF document text
    • http://files.melbatheater.org/uploads/1/3/1/3/131380558/8207605.pdfIn PDF document text
    • http://files.steinbachcommunityoutreach.com/uploads/1/3/1/0/131071166/keniwirafa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ea8d559-f42e-48f6-a003-ca4a941c988d/33242350003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a905a54-7305-49fc-9b6c-d9ed102952ea/fedexufobiwawaruzawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19528eaa-8f5c-4726-86a0-9336f9ef1e73/50525141263.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c59d667-ea2e-4093-95f1-0de0eea45568/40839912926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5a6c712-812c-499a-883f-c00209ad21ba/balibizot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2874/2298/files/46107770650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/nudufewupiromexew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4416/0156/files/skyrim_thieves_guild_members.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2535/7210/files/ge_3_crock_slow_cooker_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2582/0579/files/77130737936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/82490434635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4758/7492/files/pirelli_scorpion_tires_motorcycle.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACD 5004 bytes
SHA-256: 91689c160f541451a69948d75d47b7802922156a7fbcc8215dbf9e42339ac233
font_01_sfnt_off00007ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA2 10400 bytes
SHA-256: 66730e884f2c4131c347b3a37b0108a18ffea3acbb3b43ad7531c6e0191288b7

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