Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18f236524ea37b9…

MALICIOUS

PDF

80.9 KB Created: 2021-04-01 15:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e604a00f11ae8fd1af043971e1c6b19 SHA-1: 658bb32f82dc8434f4f8b974700636a67353d790 SHA-256: e18f236524ea37b90b62ea2763c18b68cb41c92c39a2fbe15b2fee5764bc63d7
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm, with the primary malicious URL being https://midufefew.ru/aws?utm_term=eye+of+the+beholder+metallica+meaning. This suggests the document's purpose is to direct users to potentially malicious websites for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/aws?utm_term=eye+of+the+beholder+metallica+meaning
    • http://nezowigivomi.scienceontheweb.net/interior_decoration_company_profile.pdf
    • http://pixell.store/how_to_train_your_dragon_series_book_box_set7rwh6.pdf
    • https://cdn-cms.f-static.net/uploads/4366980/normal_60609fcf1ad67.pdf
    • http://catsism.com/destiny_2_a_weapon_of_hope_guide8nubu.pdf
    • http://reduslimitalia-ufficiale.site/tlc_discography_rarqczp8.pdf
    • https://static.s123-cdn-static.com/uploads/4409405/normal_5fc94e008cc59.pdf
    • http://strgb2.ru/rasujew7hcqz.pdf
    • http://gejokakop.mygamesonline.org/43225922148.pdf
    • https://cdn-cms.f-static.net/uploads/4422645/normal_603b991e635b4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://18574fdc-dbe8-4f24-a3f7-ab3d6ff540e7.filesusr.com/ugd/d45bfa_6533c41c54de4c10aae3bd23564d3a6e.pdf?index=true
    • https://238a82c5-85a8-4641-a991-2f0f5270ddc4.filesusr.com/ugd/63f22d_bc40d768ce15495382ea71e3218ece49.pdf?index=true
    • https://s3.amazonaws.com/muwemivumazulax/jozetaxapas.pdf
    • https://2dc0326d-ac60-47d8-bf46-f2dc9d334570.filesusr.com/ugd/21b4a7_4cea06061d2f4b1b960927941673749e.pdf?index=true
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_399e5735d5ac4c9da27b2cc62e6bbd4f.pdf?index=true
    • https://s3.amazonaws.com/wewuxuviwar/dusewogosuroditisefonutiv.pdf
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_5f55dbbe1fae408b9f566dc7bd6f0a3d.pdf?index=true
    • https://s3.amazonaws.com/radubozufiwo/72220400217.pdf
    • https://s3.amazonaws.com/tutapaxi/busaxifikolimotajimiguru.pdf
    • https://0ca3454e-05ac-49fc-8d00-644b1af7be3c.filesusr.com/ugd/8bf3fc_4875c96127494146960bb5db8295b803.pdf?index=true
    • https://s3.amazonaws.com/nitidadufetenu/famejopejofizesobotedipa.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee6.bin
b4bcb133d4e1fef3a981f11e54472b32125b079fd3d42dde063f7d7807372f09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE6 5244 bytes
font_01_sfnt_off00010097.bin
3453698e756bc7d571d84135556a84a3371cbff44b74b7c2c6768cd175c26e26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10097 11516 bytes
font_02_sfnt_off000127d4.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127D4 4324 bytes

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