PDF malware analysis — malicious · 2c50a885f8a8e32e

MALICIOUS

PDF

46.1 KB Created: 2020-10-01 06:06:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 01398cbf77e7489cd11fae47e1a775ce SHA-1: fbe1bd267bc1b7721a616f86f4f7fefd9c5110af SHA-256: 2c50a885f8a8e32e537547badc900a0c7c08bbbff2f71d15dbf80e60c0515ba1

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest an attempt to lure the user to download further malicious content or engage in a phishing scheme. No scripts were extracted, but the presence of malicious links is sufficient evidence of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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/strik?keyword=arrest+of+descent+adalah+pdf In PDF document text
- http://tifufuj.georgianblue.ca/uploads/1/3/2/6/132680866/731981.pdfIn PDF document text
- http://zamiwabo.tipsyglasswinery.com/uploads/1/3/2/7/132740829/4b7cb0f7ddc829a.pdfIn PDF document text
- http://mezisan.uncagedventures.com/uploads/1/3/1/4/131482823/tugekonepasepu.pdfIn PDF document text
- https://site-1036951.mozfiles.com/files/1036951/973783394.pdfIn PDF document text
- https://site-1039929.mozfiles.com/files/1039929/jijasusezosaxa.pdfIn PDF document text
- https://site-1036830.mozfiles.com/files/1036830/71531334541.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/9782/3134/files/free_online_marriage_invitation_templates.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/6668/2263/files/ap_chemistry_textbook_chang.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1705/0008/files/93220421809.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5738/8451/files/surge_arrester_file.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_off000076ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76FF	5232 bytes
SHA-256: `b98896c58f53f6f70cb2e4374d6b80c09ec716f630015ca30a53af9be6726c72`
`font_01_sfnt_off000088c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88C9	10356 bytes
SHA-256: `e3833f9ac9cc8d5017124670fa6ff4707841e823f4cc5f83f4a74fe7f300d559`

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