Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a317f8f122e37ae…

MALICIOUS

PDF

75.3 KB Created: 2021-03-17 02:02:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5c7cd5c0c7c9e30fa9f8efd5cf2c19b8 SHA-1: 5a7957fceed9329c0c7887ed0c50c18bcf53dd73 SHA-256: 0a317f8f122e37ae521126e85201d37e4342dc9044579022998a3e5f05a4d3af
126 Risk Score

Malware Insights

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

The PDF file contains multiple external links, including one that explicitly mentions 'rearrange pdf pages acrobat pro' and points to a suspicious domain. Heuristics indicate it's a link farm on disposable hosting, and ClamAV detected it as a phishing trojan. The ML classifier also flagged it as malicious with high confidence. While no scripts were explicitly extracted, the nature of the links and the detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/award?keyword=rearrange+pdf+pages+acrobat+pro PDF link annotation
    • http://kekemubitaf.iblogger.org/63921824821.pdfIn PDF document text
    • http://jenewazajasazu.getenjoyment.net/puwof.pdfIn PDF document text
    • http://pusewuvi.medianewsonline.com/my_cloud_desktop_app_wdc.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/xuveruwilarelizofeman.pdfIn PDF document text
    • http://arnautmebel.ru/pekolugesp1z8j.pdfIn PDF document text
    • http://hookup671.site/dexless_warrior_guide_maplestoryz36cx.pdfIn PDF document text
    • http://onatural.space/weather_forecast_seattle_smokeh4mbt.pdfIn PDF document text
    • http://bekowakiged.iblogger.org/are_dryer_sheets_bad_for_your_hair.pdfIn PDF document text
    • http://dontbeshy.xyz/lamujixapuvaditixirdkjm.pdfIn PDF document text
    • http://prequester.online/849596018m0plv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pozijawikubinun.myartsonline.com/bolefumavixavibadefup.pdfIn PDF document text
    • https://5ee0d2ad-6486-47ce-ab7d-0e7b2bae4193.filesusr.com/ugd/bc0d1e_62780f2f0c2d42e28f1009482c0e9b2d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widiku/im_sorry_im_not_perfect_girlfriend_quotes.pdfIn PDF document text
    • https://ae0ecf71-49bb-4ac4-bba4-d0f2a20d1af9.filesusr.com/ugd/668a47_b34b0543a97b4df190fccfa383de79b4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/bakuzizivewegotatijege.pdfIn PDF document text
    • https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_d56e935ebdea4653b47f4bc8aca91738.pdf?index=trueIn PDF document text
    • http://gagafexekoxoseb.epizy.com/92116546100.pdfIn PDF document text
    • https://d064ede3-316f-4d13-8ec5-014b2136b3bd.filesusr.com/ugd/154db6_6515a1df8f504764bf6c7ec8ca7cd6b5.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_off0000e6af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AF 5436 bytes
SHA-256: 49465e8a779641da3b250878b5196eba12b8500cf362dff1245b81ce1995b393
font_01_sfnt_off0000f943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF943 10792 bytes
SHA-256: 5d4a7e21118dd87c4f91acbaaae7c84dfbd02edea771e376b309eff61b40e0ab

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