Malicious PDF — malware analysis report

Static analysis result for SHA-256 a01314043327fde9…

MALICIOUS

PDF

77.1 KB Created: 2020-12-24 04:26:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a3a98cf51fd4e13ea26421d054e3947f SHA-1: 75484d66ff910fa9aba5d27d65e34845874bb150 SHA-256: a01314043327fde92cf078e2a96b06236313509a62a484b5f45023148a070cf7
214 Risk Score

Malware Insights

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

The PDF contains multiple links to external websites, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to "lyrics genius". The presence of numerous PDF links, many hosted on Weebly, indicates a link farm designed to distribute malicious content or engage in phishing. ClamAV and ML classifiers also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://traffmen.ru/123?utm_term=white+and+nerdy+lyrics+genius In PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/navotibip.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/427e8.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/zoxumibutifubadozigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473619/normal_5fd1cc507a063.pdfIn PDF document text
    • https://bevabuje.weebly.com/uploads/1/3/4/8/134897483/munige.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379483/normal_5f9dad209bac4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475194/normal_5fad70bf64856.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://uploads.strikinglycdn.com/files/eb41801f-bf2e-4559-9e1e-4fa20d408c4c/philips_zoom_daywhite_9.5_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/546672d8-56fa-41e9-ace5-5e791b854765/lasonuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d60e06bb-3558-47ec-a5e1-3ee5843a008a/reddit_heal_slut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/110bf938-88db-4be4-acd0-dfe93a658da9/56332925086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1f99b19-0365-40dc-80a1-6dca1705dc0f/wilugirisujazetokabemugox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4420c8d-30bb-4bb5-b0cd-ed1d4a8384fa/zudululogabe.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_off0000e3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EF 5088 bytes
SHA-256: cc47e4d7405947247adc1108f5d3338f42b09110935e80e09dcf8910b98547a4
font_01_sfnt_off0000f537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF537 10924 bytes
SHA-256: 5ed957cb3de6fd6821a8c06bd32620a9d88e79b845b0e2aa5d0a50e038251014
font_02_sfnt_off0001198e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1198E 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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