Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad16b8e8021a0615…

MALICIOUS

PDF

77.0 KB Created: 2021-03-11 17:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 623f60868b55dfb09cd8106d966f0f77 SHA-1: dd18c2f0d4f7c312b405c8b0c78df86acd7c488f SHA-256: ad16b8e8021a06158491df0bd9b634117822c0d90718c24225de07dba05ac124
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The primary URL, 'https://resalured.ru/123?utm_term=baghban+full+movie++moviescounter', indicates a lure related to movie downloads, likely to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://resalured.ru/123?utm_term=baghban+full+movie++moviescounter PDF link annotation
    • https://difidewuwigexej.weebly.com/uploads/1/3/4/6/134652805/a3dd5211c8985f3.pdfIn PDF document text
    • https://wovugozota.weebly.com/uploads/1/3/2/6/132695813/mutulev.pdfIn PDF document text
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/wifebematikipe-kotatabudu-suludozapaxa-pevekoju.pdfIn PDF document text
    • http://verification-help.business/miletuxadexa4u11q.pdfIn PDF document text
    • https://motodamoz.weebly.com/uploads/1/3/1/4/131452818/sabikafopato.pdfIn PDF document text
    • http://xtrading.buzz/76443189772rxlgc.pdfIn PDF document text
    • https://widegavadiwudux.weebly.com/uploads/1/3/5/3/135325068/b34df965745a4.pdfIn PDF document text
    • https://fumevixupi.weebly.com/uploads/1/3/0/7/130775707/lozefiv-gokujusi-fesiluv-kozimo.pdfIn PDF document text
    • https://vojumemij.weebly.com/uploads/1/3/4/4/134473557/5171184.pdfIn PDF document text
    • http://rent-nout.site/84_charing_cross_road_movie_imdbz2x5n.pdfIn PDF document text
    • https://fologonalufofu.weebly.com/uploads/1/3/4/6/134694067/eb8f4713.pdfIn PDF document text
    • https://xoselupovogim.weebly.com/uploads/1/3/4/6/134610719/wefetagavafitigese.pdfIn PDF document text
    • https://doxorovovo.weebly.com/uploads/1/3/4/4/134479089/1195135.pdfIn PDF document text
    • http://genoray.pro/circle_geometry_worksheetsm4m9r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://98771922-91e4-4673-aa0d-7794f4435593.filesusr.com/ugd/b6aaa0_37e8d5e5f5314ba793312608ad7efafb.pdf?index=trueIn PDF document text
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_d8824d8c092c4be28307ebf278b02b3e.pdf?index=trueIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_3ef82c50a3d646e2a499a4f978143466.pdf?index=trueIn PDF document text
    • https://3d7c42e8-cad9-4196-8f3c-0f210fd97588.filesusr.com/ugd/1b7c00_3a3172cdc87143939a1e771f4ddad4bd.pdf?index=trueIn PDF document text
    • https://ed0f7819-48b4-4c0d-9119-93de03d81b9c.filesusr.com/ugd/e481ce_05c20e3920ab41b5a422861d850f568f.pdf?index=trueIn PDF document text
    • https://54d25d35-1219-4e5f-97c3-905e72ea606f.filesusr.com/ugd/6d59ab_25337c9a276e4918bd8724f3f042b170.pdf?index=trueIn PDF document text
    • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_b82238075f7a47e5aec8781b98852f37.pdf?index=trueIn PDF document text
    • https://b6c9d0de-81a1-4db9-ab7d-8a95af9e63d6.filesusr.com/ugd/b28ae2_d8cb20198c5f4edda9c83c449ed893c8.pdf?index=trueIn PDF document text
    • https://a815f367-2516-4b88-9496-eed07d5c1eb7.filesusr.com/ugd/665c20_dd577cc4756c495da6cd891573b03f04.pdf?index=trueIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_3bfe02597e5f4d1a97081c4f9286212d.pdf?index=trueIn PDF document text
    • https://6754c94d-8795-460a-880d-d127bb37d4d4.filesusr.com/ugd/2383dc_4502f10ae3ce4fb3bd4833a805efd0eb.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF032 5544 bytes
SHA-256: 8d429b721ce3f4b6a01eaf0f585e738fa0bbec9d484f0b8db22accf14700001d
font_01_sfnt_off000102f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F7 10344 bytes
SHA-256: b3d8c7f309ecfdcd1ad8d4e929e1fdb384a3b9551829004ed35740b0dbb8fa5c

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