Malicious PDF — malware analysis report

Static analysis result for SHA-256 1002e9e899c3de35…

MALICIOUS

PDF

79.7 KB Created: 2021-03-17 20:20:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42b2a1c9a8ebf19299161e5f4c4cfbf0 SHA-1: 831ebd0aab66c8de692be13cf6366f0f709c55da SHA-256: 1002e9e899c3de35bc3eee2ce8438e957ed8efd0872a145deb38c7ddbdac83d0
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, with one pointing to 'https://lozipotod.ru/wix?keyword=ffxiv+fishing+scrip+guide', suggesting a link farm or phishing lure. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/wix?keyword=ffxiv+fishing+scrip+guide
    • http://scarcebook.com/vamobutokemuvofozexephdwbx.pdf
    • http://vimobewawulipiz.mypressonline.com/alice_in_wonderland_novel_free_download.pdf
    • http://demask.fun/write_thai_vowelsu8pt1.pdf
    • http://gixitetopes.scienceontheweb.net/ladelofusiwilumubilavutel.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/getizar/77387904736.pdf
    • https://5d3a357a-25b2-4459-9cd8-210b235f7b36.filesusr.com/ugd/45e30f_4f11d67bfd1f4fe78d2a6d6745e30733.pdf?index=true
    • https://s3.amazonaws.com/gelawiweza/jusifakedut.pdf
    • http://zutugidod.onlinewebshop.net/nenisawokarakifu.pdf
    • https://s3.amazonaws.com/bopuxosavubare/xerox_altalink_c8035_driver.pdf
    • https://s3.amazonaws.com/luborinizu/multiplication_table_till_30.pdf
    • https://f64a1a0a-debf-4843-a838-a34c0cae0f4a.filesusr.com/ugd/89602e_6c70d4f2c66a4f1cbb8410aca7b5e3de.pdf?index=true
    • https://s3.amazonaws.com/wufujudisu/rental_agreement_template_north_carolina.pdf
    • http://mugazukadum.onlinewebshop.net/a_series_of_unfortunate_events_movie_plot_summary.pdf
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_cf7336cd31d44ff8a14169d26bde7357.pdf?index=true
    • https://uploads.strikinglycdn.com/files/93d89c83-71d4-4e39-94b2-e38f674c4257/84618128513.pdf
    • https://s3.amazonaws.com/gekixadonuru/luguxexudoketapev.pdf
    • https://3c199e1c-ff83-4553-a351-db1e9419129c.filesusr.com/ugd/424a74_a997c59f19b140759dad1b18b7eef245.pdf?index=true
    • https://uploads.strikinglycdn.com/files/80f51b99-06cf-42d4-889d-8fb6969da323/11808457099.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e883.bin
6e6f5bc00a7bee1e37759097886de0530237d72293417bf273c25d69fd3cdbbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE883 5260 bytes
font_01_sfnt_off0000fa7b.bin
18c1607e869d7065ec7749a2f460596784f15bd5c032a166bb94c03a10ce1a14		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7B 9932 bytes
font_02_sfnt_off00011cad.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAD 16092 bytes

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