Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edf0b20a569a664…

MALICIOUS

PDF

75.9 KB Created: 2021-03-02 16:05:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0c9402282811ff8a6853c7f60ec4a040 SHA-1: 235c35fc9611f9711c6c68791448696bc2dbc243 SHA-256: 8edf0b20a569a664c56bba06e7c551a2aa4daaca84eedc1b3666624d4f566674
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The presence of a 'download button' heuristic suggests a lure for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/strik?utm_term=line+6+pod+hd500x+metal+patches PDF link annotation
    • http://instacopyrighthelpteam.com/venn_diagram_example_math_problems3hh3q.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/Dhd1ia8/pubuzedu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417834/normal_5fd1d57ca3467.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/spoken_english_book_in_bangla.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/OgfTQQx/ferelavokalexikowi.pdfIn PDF document text
    • http://nncucuucuc.space/478483892176boj7.pdfIn PDF document text
    • http://kidufamipowanot.mywebcommunity.org/60402949307.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408187/normal_5feb621cdaf46.pdfIn PDF document text
    • https://cdn.sqhk.co/dagosasojo/igpgiaa/82514267232.pdfIn PDF document text
    • http://soxitezi.iblogger.org/anchoring_script_for_welcome_dance_performance.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/dK0Ggcr/walesi_bardok_vers.pdfIn PDF document text
    • http://iminn.ru/1534161522vt5bk.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/mKjdgca/among_us_wallpaper_iphone_8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454966/normal_600f740e3a587.pdfIn PDF document text
    • http://sun-italy.space/how_to_get_abs_quickly_exercises1yvez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://peledopa.myartsonline.com/how_to_remove_disc_from_xbox_360_without_power.pdfIn PDF document text
    • http://bukaduxanob.epizy.com/pixurenotopumawirowo.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_off0000db9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9B 5436 bytes
SHA-256: 64be98fc5f525e1f7179073aed7e9cbdccfd4a9063801419508d92f137dd748c
font_01_sfnt_off0000edec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEC 11140 bytes
SHA-256: 2601aed7671a6a6c6fc8aafd5b27d0cae54badcfb5bc57c695f0b9aabb806c83
font_02_sfnt_off000113fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113FD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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