Malicious PDF — malware analysis report

Static analysis result for SHA-256 70bb2180f80630a9…

MALICIOUS

PDF

68.0 KB Created: 2020-12-07 06:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: abc21144404898f052855c3cc8060698 SHA-1: 1a0894a69be9081358ef04efccdcaee952468e84 SHA-256: 70bb2180f80630a9f31244d235ee915a918c317ea4ebcfeb360318a4b20e6822
222 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical finding for a link to known malicious redirector infrastructure and a PDF link farm. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text fragments and URLs that align with phishing or malware distribution tactics. The presence of a link to `gettraff.ru` suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gettraff.ru/aws?utm_term=reporters+today+contact+number In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f9c02e136dc1.pdfIn PDF document text
    • https://bovozamebezunun.weebly.com/uploads/1/3/4/7/134701649/26b967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463308/normal_5fa70e37dbf73.pdfIn PDF document text
    • https://furutivox.weebly.com/uploads/1/3/4/3/134360368/4de0a72b34feef9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380522/normal_5faf708a0d311.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393514/normal_5fbe74fe8f56d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4e5689a-ec3e-46e9-b039-6add46473f71/lomomejedomo.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/59817427216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccc7b6df-4a0f-406a-a284-4a123d9c8f6c/how_to_all_reset_citizen_eco-drive_watch_e650.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/bronsted_lowry_base_vs_acid.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ca6faa0dc1643a2d2575/t/5fcd73c36f0099009e791c74/1607300036532/81969330031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6b3c51f-d11b-4de0-a8a1-45db10c7f4d0/fukalobodig.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/81833005546.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/vanejosomoximud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f57e2015-2d1e-4dba-92ab-9da0063848b9/fibuwajedijorewibupepa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0deee1c8c74131431a276/t/5fc866a1ee804a17a1d09fc4/1606968995202/shelby_cobra_logo_wallpaper_hd.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE9 5436 bytes
SHA-256: de919b1e61e3867c122d5a525a241a0bfb5bca0c6471cd89bdd38849cddcfb37
font_01_sfnt_off0000df54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF54 10608 bytes
SHA-256: 4fbd6f6055c91f47a0de346d1c3027f8cb964492928ea711da84be72216fe47b

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