Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf04a4df930ba0b…

MALICIOUS

PDF

90.1 KB Created: 2021-04-04 22:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 741db0cf241c82e9abaf966ec17dcb35 SHA-1: 6d73121c2c2dd95b315ebaa4e71834972c1f3ba2 SHA-256: aaf04a4df930ba0bb87296c0e8697ea0ee2a87ed22fa5c1da68a360c6d83bb2b
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO link farms and phishing lures. The primary URL, 'https://jumiwimov.ru/award?keyword=agile+project+management+training+pdf', suggests a pretext for directing users to potentially malicious content. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jumiwimov.ru/award?keyword=agile+project+management+training+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_436ea34e3e5f47c688cdadae01934745.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/df2c2338-dc11-47c9-a5ed-5dfa9010edaa/35200114620.pdfIn PDF document text
    • https://a765b249-d442-4b07-8ea9-8318d996b894.filesusr.com/ugd/902d29_f1bdd91fc43e48978f736888f8b4de69.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/7732409734.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/5147690089.pdfIn PDF document text
    • http://jetetekeputesi.epizy.com/list_of_engineering_colleges_in_hyderabad_under_jntu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a2ec31-5392-4add-bad3-2b3540c07b5d/46060860614.pdfIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_f159cdbb4802494db3c527cac4ee6f67.pdf?index=trueIn PDF document text
    • http://xabuvale.epizy.com/juniwejisapita.pdfIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_9c53f729e722477c8a05d0b03147e9fd.pdf?index=trueIn PDF document text
    • http://lobulowigewimu.epizy.com/46389738514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c2cf35d-50af-4770-b1e9-7e1b91837b5d/60119260656.pdfIn PDF document text
    • http://xamukuxoze.epizy.com/energia_de_biomassa_florestal.pdfIn PDF document text
    • https://2d2b1dae-c014-4902-97e6-c3f1d56915cd.filesusr.com/ugd/70e5f7_35aed2c11c85421b8024c0c37653e7fc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/90ea80a6-b73a-4b51-bd21-24dd00c3785a/xodugunajepag.pdfIn PDF document text
    • http://vetebiba.rf.gd/how_to_turn_webpage_into_chrome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91f219a-4c9d-4808-b8c0-5e7611347fe4/que_causa_la_trombosis_arterial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8afd6507-986c-43d4-b4b9-79af7c12883c/24183797919.pdfIn PDF document text
    • https://7e62deb9-9b1a-4e2d-8b60-9a8f762ee201.filesusr.com/ugd/1f553f_58608bb4dfcc4339b6fdd3fd903651e1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b0463f1-cae2-4890-a7f7-0dcc1531bf74/zuwubofenisovum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c35e239-2dcf-45ed-8c6d-bb8db31a5ed8/45857354997.pdfIn PDF document text
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_c9eaf68a9b5a466682ce67f1594197c1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b313709-2035-4c49-85f3-a34629de7639/86275194991.pdfIn PDF document text
    • https://46c19374-600d-43be-a5f2-d8bf07c6fddf.filesusr.com/ugd/cc94a4_06ef20c418404a6ba712064bf7637435.pdf?index=trueIn PDF document text
    • https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_7b301cc78e2546ff801f4130c8fbb522.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12298 5364 bytes
SHA-256: 0999e1ff9c13ef00a59782fc1df1783d8e8b7dc8828a1883d50b9f7209f7b9db
font_01_sfnt_off000134ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134CA 11068 bytes
SHA-256: b196841fc1c4514776cb519455742f25ccd9bae661cccb50f8723bb689ef6044

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