PDF malware analysis — malicious · aac02d044b811032

MALICIOUS

PDF

172.2 KB Created: 2020-11-17 22:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 35732480f0592b12655a16af58da5cc8 SHA-1: 95cc9c86f2b7c7da4953c9aee1fc2fccba7d590b SHA-256: aac02d044b811032ddf416fd2a96310b8bd91c9ee19feda78a1f029f35fec237

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV specifically identifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to search terms, and an external URI points to a suspicious URL, suggesting a phishing or credential harvesting attempt. No scripts were extracted, but the presence of embedded URLs and the overall detection profile indicate a malicious intent to redirect the user to a harmful site.

Machine Learning

Nyx PDF Classifier malicious score 0.9978

Heuristics 4

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://traffnew.ru/123?utm_term=magnet+elementary+schools+in+ct PDF link annotation
- https://cdn-cms.f-static.net/uploads/4451754/normal_5fa50690c88bd.pdfIn PDF document text
- https://resumasilazivo.weebly.com/uploads/1/3/4/5/134509929/lemow-xekegujodegazu-dazokuv-kazesipobaj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369322/normal_5fab1d4a647a9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368788/normal_5f8f6dca41e0b.pdfIn PDF document text
- https://tuxitusonodedin.weebly.com/uploads/1/3/0/8/130873989/9d0620f650526.pdfIn PDF document text
- https://sokufadatapa.weebly.com/uploads/1/3/4/4/134474271/gemirir.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/kudufigunabi/63471241972.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eceb1c63-12c2-4b69-a1e3-06cbda8993c2/83433792017.pdfIn PDF document text
- https://s3.amazonaws.com/tesasubawalozan/castle_of_wizardry.pdfIn PDF document text
- https://s3.amazonaws.com/sedimeraxufi/78430551883.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00026a92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x26A92	5320 bytes
SHA-256: `1f624f0a55a114ab373c8439a63d6414948dc8ab4374a91216305bc515cd8253`
`font_01_sfnt_off00027c94.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x27C94	11424 bytes
SHA-256: `d95b00e83396e056d3bbd89df886c1499b667136a610cb7fa4c4eab1f7ff2550`

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