Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0fd180d0808806a…

MALICIOUS

PDF

47.3 KB Created: 2020-10-25 10:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 3ef54c0248e14ea705f514e5fdc88d7e SHA-1: 4f9f534cdb31be3dfa85b759e85a957935d16804 SHA-256: a0fd180d0808806a926c44ebba5296e9cc95424db5c661b74b98f6a15448ac98
184 Risk Score

Malware Insights

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

This PDF file was identified as malicious by an ML classifier and contains numerous embedded links. One of these links, 'https://gettraff.ru/123?keyword=the+hundred+foot+journey+imdb+parents+guide', points to known malicious redirector infrastructure. The document also functions as a link farm, hosting a large number of external PDF links, many of which are on disposable hosting, suggesting an attempt to manipulate search engine rankings or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/123?keyword=the+hundred+foot+journey+imdb+parents+guide In PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.pdfIn PDF document text
    • https://ninukiwipovesot.weebly.com/uploads/1/3/0/9/130969879/lubineli.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/vupuxa.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/a35c706baa7.pdfIn PDF document text
    • https://vabejodero.weebly.com/uploads/1/3/4/3/134378136/7604763.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/xezojejonopexu_gowesuroporila_wagamiwolufa.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/1faa2c32c76a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393499/normal_5f8e5d5581e64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f8f1ccae5e8e.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/fatinafige_mobunomuvugejuz_tinugakoze_mevirisef.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/kimiluninijedow.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/tepuput_goludogonok_molul_gekagur.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/9ef3be4a-d959-406f-8911-e768a49d89ce/10939032515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7485f7a-c46f-4a0f-814c-60e702da4ece/fujumeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a42529f-b53f-415e-8603-7d1a18b8d611/97511312935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d205378a-3a08-4bb4-8ea3-187aaade1395/new_holland_model_451_sickle_bar_mower_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/023b755a-9425-4dcf-975c-ff09069ad686/17503325490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8942/0184/files/yajur_veda_english_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5639/8246/files/exploring_psychology_10th_edition_myers.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_off00007811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7811 5692 bytes
SHA-256: 31482f3b6075428dd360c513f4a2d6161752298d8aecea6919bed7fae896c765
font_01_sfnt_off00008b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4A 10760 bytes
SHA-256: b35612d60269be7a0a5f491d32f1462401d386b69030f9d20a6831127e8ad31f