PDF malware analysis — malicious · 650066766835fe31

MALICIOUS

PDF

72.8 KB Created: 2021-01-13 09:39:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 6d04ee1f1ff1f58517693ecf94a7eaeb SHA-1: 940dc216fb53e74c8d2cbb0ee53f0563bfea6648 SHA-256: 650066766835fe311d8e20a1ba2d800705ef668142db0b28b6b2ee1f570dd6ff

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=d%2526d+staff+of+healing PDF link annotation
- https://site-1168059.mozfiles.com/files/1168059/pudijevumumo.pdfIn PDF document text
- https://cdn.sqhk.co/perigupa/jcrhcgc/don_t_touch_my_phone_app_lock.pdfIn PDF document text
- https://cdn.sqhk.co/luxixumogez/dhM2jc4/monster_hunter_world_iceborne_fatalis_armor.pdfIn PDF document text
- https://site-1220870.mozfiles.com/files/1220870/medidas_prevencin_para_el_embarazo_adolescente.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/mizeteb/jumenugokeva.pdfIn PDF document text
- https://s3.amazonaws.com/pewebopufupe/ftdi_drivers_installation_guide_for_linux.pdfIn PDF document text
- https://s3.amazonaws.com/woxotopapozokev/zabuwaralotesurita.pdfIn PDF document text
- https://s3.amazonaws.com/zoromexemuzid/wiwakikaf.pdfIn PDF document text
- https://s3.amazonaws.com/towutoginadivu/damurasizonijesipeluven.pdfIn PDF document text
- https://s3.amazonaws.com/bejokazemur/azure_sql_db_performance_tiers.pdfIn PDF document text
- https://s3.amazonaws.com/pegek/embryology_textbook.pdfIn PDF document text
- https://s3.amazonaws.com/fajonubinomeder/blessing_shumba_new_album.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_off0000e3da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE3DA	4156 bytes
SHA-256: `bb1702a9e9b617346157f9ea6f36cc14559c37d4a4a2cf683ebd57dce9d2c082`
`font_01_sfnt_off0000f209.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF209	10736 bytes
SHA-256: `f992bff05fc19ef6855bd443cd9626f725f38b289bad958ccacf9721a177f945`

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