Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f353a916d3d04f5…

MALICIOUS

PDF

75.3 KB Created: 2021-03-05 16:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c0b2d18ca6436a036818dd46c145d12e SHA-1: d057944ca3ea9c4f3b88e246e37087718b079160 SHA-256: 7f353a916d3d04f5af33f4e1ea902a46a0f38e8cfa7e51d1ad632b1473ab1a03
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with a high-confidence ML classifier and ClamAV detection indicating malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the PDF is designed to host numerous links, likely for SEO manipulation or to redirect users to malicious sites. The presence of URLs like 'https://bologen.ru/123?utm_term=logitech+k800+battery+blinking+red' indicates a potential phishing lure related to search queries.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/123?utm_term=logitech+k800+battery+blinking+red PDF link annotation
    • http://lebedugipul.mywebcommunity.org/vilerevis.pdfIn PDF document text
    • http://centerverifybadge.com/wayfair_twin_platform_bed_with_storager8ddo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383170/normal_60299c7b90ef1.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/24518130510.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/topupemudifovetuzarig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407986/normal_6024bf84c4bf1.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/83582366396.pdfIn PDF document text
    • http://gofadivus.mygamesonline.org/5538356765.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504788/normal_60065767a86fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427076/normal_6017beb076300.pdfIn PDF document text
    • http://mbfsopg.com/33218562936ythvw.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sidepojedava.myartsonline.com/dugamizesavere.pdfIn PDF document text
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_eeb0ff0eadc84de5888bf1f9e201f0e9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/xoxajemenonaxozapi.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/anticancer_activity_of_lemon.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/is_it_healthy_to_use_a_diffuser.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/27042215927.pdfIn PDF document text
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_c6ba60e2ed2943a09dfae239c5e1fd75.pdf?index=trueIn PDF document text
    • https://83f018a0-8e49-44f0-b57e-805e464a5f06.filesusr.com/ugd/10a4aa_4b63406a1c544535b8f5c5f56c1fe5b6.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE014 1572 bytes
SHA-256: 452612010bf92904adaef4bfd0d246ec5f24367bf67eb47c7737d6475a0c45d1
font_01_sfnt_off0000e817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE817 5608 bytes
SHA-256: ab9b07ab8bacf90ff4a9453085cdfc2219908bb2d4f6cfdce3448081cde271ee
font_02_sfnt_off0000fb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2B 10676 bytes
SHA-256: 569e605bd700c92119fc407e50a83f1dd485184d7f53295438d46ff741d0096e

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