Malicious PDF — malware analysis report

Static analysis result for SHA-256 d710b1546e90faf5…

MALICIOUS

PDF

46.0 KB Created: 2020-10-16 11:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f14b27dad5845b29f31532152ba545f9 SHA-1: 425c479f3e9e0554a036ef224ce34026b11798c6 SHA-256: d710b1546e90faf507777857c62b2bb5ec68d774eefbc472bfbff9315870933e
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ggtraff.ru/wb?keyword=exid%20up%20and%20down%20chinese%20version%20mp3%20download'. The document also functions as a link farm, pointing to 19 external PDF files, many hosted on Weebly. The presence of these links suggests the document's primary purpose is to redirect users to potentially harmful websites, likely for phishing or further malware distribution.

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/wb?keyword=exid%20up%20and%20down%20chinese%20version%20mp3%20download In PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/fc197db436cd43b.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/muviz_zomogofoxaxuf.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/7237992.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/2245757.pdfIn PDF document text
    • https://buxivadoga.weebly.com/uploads/1/3/0/7/130740323/nesikixulog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3078/4411/files/24517742903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9647/1707/files/taylor_indoor_outdoor_thermometer_instructions_1512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/6984/9767/files/tezinerimalizigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7713/0658/files/khan_academy_u_substitution_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4272/6310/files/80125994717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6787ede5-31be-494a-ac14-c18d32b2e059/vetadozamuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2125373-6d09-43c7-9452-11b5a85feed3/biduzile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26d21652-796a-45bb-bac2-14fa621b0c12/32055365519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cca28b65-b91a-443c-b4d0-aa0c8f0ce60f/17592404622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc76a385-d7a8-469a-8c58-bda113855ffa/81157856049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8680/5667/files/indices_maths_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/cpc_exam_questions_and_answers_free_download_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1949/6355/files/40179618098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/baby_girl_romper_pattern.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5668 2956 bytes
SHA-256: 4e2518d5e100005a9bb82037d8baff7ef303cf01beb9661865bb8153062bd0bb
font_01_sfnt_off000060ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FF 5652 bytes
SHA-256: 7e44d1ff9af49a4a15bc8fb39b07bcf578275ead42d5b34e8151bba0b8131e77
font_02_sfnt_off0000742e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742E 18844 bytes
SHA-256: 0022ac5df3417f9c4d3dece6aade33f8b4f7e5eb8bf22449ed6065e408eb432b

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