Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0f9bba50fd1ec2…

MALICIOUS

PDF

79.4 KB Created: 2021-02-24 02:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 560711f04625a721031722f3fd52e195 SHA-1: 462319b1b6226e3dd6c62fe186b4bdc46a2c43d0 SHA-256: 8c0f9bba50fd1ec2aa1bfafd5f9a65c373f0f074bb0db39d43023db6f02c10e4
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to other PDFs, suggesting a link farm or SEO spam tactic. The primary URL, 'https://maypoin.ru/wix?keyword=don%2527t+let+your+emotions+run+your+life+free+pdf', is likely part of a phishing or malicious redirection scheme. While no scripts were explicitly extracted, the PDF structure and extensive external linking are indicative of malicious intent, possibly involving embedded JavaScript for redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://maypoin.ru/wix?keyword=don%2527t+let+your+emotions+run+your+life+free+pdf PDF link annotation
    • http://pekibule.iblogger.org/mirorirof.pdfIn PDF document text
    • http://vknacruckalaikov123.xyz/sidolitikidisu65z6x.pdfIn PDF document text
    • https://bopelesi.weebly.com/uploads/1/3/0/8/130874615/dorojakupe.pdfIn PDF document text
    • http://art-practice.org/introduction_to_exponential_functions_common_core_algebra_1_homework_answersfs66e.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
    • https://s3.amazonaws.com/jawusawar/10309304061.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/74060484549.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/marlin_model_80_dl_peep_sight.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/pafabupotex.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/does_a_heavier_recoil_spring_reduce_recoil.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/86707422560.pdfIn PDF document text
    • http://xapimiwosusuv.epizy.com/fanaa_all_shayari_video_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/vaxaselowevasegow.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/black_wallpaper_1920x1080_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/dipibadikezojiniwimi.pdfIn PDF document text
    • http://lowazuxakosilal.epizy.com/52964486241.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_off0000edbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBF 4996 bytes
SHA-256: 538e84122131eb87961adc873d80f8eb8e299312530bcc83b529ed3ad3f41209
font_01_sfnt_off0000feb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB6 10240 bytes
SHA-256: 5b30df848be3973752730fb3215589ebc8883d0f793abdba7fc2512f1a62a913
font_02_sfnt_off000121cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121CD 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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