PDF malware analysis — malicious · 8d82cce563074e3b

MALICIOUS

PDF

41.9 KB Created: 2020-11-05 11:31:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: c8ec9753085536c4d8886b505806e458 SHA-1: 96db07c45e95e34af4260b0969cafc8bd12f5eb5 SHA-256: 8d82cce563074e3b3d06c9d9cebc65e1841a1f1deaca00c2a32b2b5906a2c367

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/123?keyword=word+with+these+letters+for+free'. The document body, though partially garbled, also contains this URL and text suggesting a lure for a reward. This indicates an attempt to redirect the user to a malicious site, likely as part of a phishing or malware distribution scheme.

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://ttraff.link/123?keyword=word+with+these+letters+for+free In PDF document text
- https://cdn-cms.f-static.net/uploads/4417656/normal_5fa17a71f1fc9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389097/normal_5f9db18abafc2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366000/normal_5f86f4d598d42.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/geradi/1980_dodge_charger_hatchback.pdfIn PDF document text
- https://s3.amazonaws.com/gidibesuxi/backyard_baseball_2001_download_scummvm.pdfIn PDF document text
- https://s3.amazonaws.com/widiku/direct_from_dell_free_download.pdfIn PDF document text
- https://s3.amazonaws.com/numegubowalonan/bekute.pdfIn PDF document text
- https://s3.amazonaws.com/jojitagifuva/l_architecture_bioclimatique.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/bucor_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cb53c8dc-a9bd-415b-9d9f-5da4b14c4e6a/68562305658.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_off000065c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65C6	4888 bytes
SHA-256: `7cd444f3101eda65cbed8c1ed917850162124740dc7852beb9f0f7479237ccb9`
`font_01_sfnt_off0000767c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x767C	10964 bytes
SHA-256: `e286ab33f77e96022325f473401538f334902e67eebea4528e17095660272ca3`

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