Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e0480d87e1fc56…

MALICIOUS

PDF

74.6 KB Created: 2020-12-15 19:51:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2de56d81c30169291313b97add0fb257 SHA-1: 07bd8fff6a177a2640fbb2b0388626795a7be249 SHA-256: e1e0480d87e1fc56e19bcfd0ab55c05f6a4f5bf66c69c01b7526d8f6c0f712d0
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffset.ru', which is a strong indicator of a phishing or malware distribution attempt. Although the document body is heavily obfuscated, the presence of the external URI is the primary driver for the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://traffset.ru/123?utm_term=holes+novel+study+grade+6 PDF link annotation
    • https://mawokivujuruti.weebly.com/uploads/1/3/4/6/134685386/goniriselenexovuxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403540/normal_5f9f18e0082da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470985/normal_5fbdef25d27ed.pdfIn PDF document text
    • https://bawimivumo.weebly.com/uploads/1/3/4/6/134609907/resezabod_sivaxam_tavesabavubemuz_notorun.pdfIn PDF document text
    • https://pewugitunuwirex.weebly.com/uploads/1/3/4/3/134373176/1948356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f874c7c75bc7.pdfIn PDF document text
    • https://gaxasonazeg.weebly.com/uploads/1/3/4/3/134375181/3949372.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc14bb05687f52b6b83d941/t/5fc32bd6e18c5c478e6313a1/1606626263962/jafibanazoduzutipemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16816364-637c-465a-8448-79970e86ae34/bosch_gts1031rt_jobsite_table_saw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78cbdd2523e4b70c2822a/t/5fcf22d48b174454e99909ec/1607410388381/xutuxeludomu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/880d5be3-565d-4278-81d3-061b19b863b0/77844272936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bda23b10-2113-4111-9e3c-c3d05a0d8566/odyssey_test_of_courage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/018a205c-dd7c-4f30-8e4f-5f2bb7128803/sorudewororikisaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93308d84-3639-4849-9bb1-05169938c290/43589985141.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eedc6126-e340-4cf3-9dd4-a8cea0b2f4a7/larawopiludubefaxo.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_off0000db84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB84 5268 bytes
SHA-256: 0ef8b7eac1352876136307a05dee96446d565eefda578803acb9817f7a7ac654
font_01_sfnt_off0000ed81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED81 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000f60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60F 11272 bytes
SHA-256: aee761fc579635b084eea64afeac5a8b0732a734fa9148149d69abde6163d94e

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