PDF malware analysis — malicious · d992d5ffa141505c

MALICIOUS

PDF

69.6 KB Created: 2021-01-05 06:04:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 0bbade5b5232c484bb3dc84a9d8aae0e SHA-1: e20efe8d1f28465561d1e998dfe62e284d8f3345 SHA-256: d992d5ffa141505c9eea431f103de6e92109c5ce96e2c31639de37cb5fd9e8f5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/aws?utm_term=best+chain+guide+bash+guard'. This indicates an attempt to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

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
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://ggtraff.ru/aws?utm_term=best+chain+guide+bash+guard In PDF document text
- https://static.s123-cdn-static.com/uploads/4369502/normal_5fc4508e7d1d9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451228/normal_5fbd295f30d9f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456140/normal_5fa919763476e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455196/normal_5faeffcc58a02.pdfIn PDF document text
- https://cdn.sqhk.co/duvapegoleva/Zhi4PLN/larry_miller_megaplex_centerville_utah.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/72c95d81-27c4-4521-8e16-01b7f03e1f8a/spendee_free_alternatives.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f74c1c2b-019e-40a8-9623-023db622de67/xepijesivevikukaposulu.pdfIn PDF document text
- https://s3.amazonaws.com/zewimu/android_app_screenshot_maker_free.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_off0000d44d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD44D	5360 bytes
SHA-256: `c5272d81481c670fd6d6b53a72fdb41fb9d55c704512d0c52b8d73bfe3e1efc7`
`font_01_sfnt_off0000e67d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE67D	10404 bytes
SHA-256: `56aacc97fb0d90920a468d68cae4956579d8aebc936c03b206d4afdcd8d8ce9a`

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