PDF malware analysis — malicious · 290ab6e209af1e7f

MALICIOUS

PDF

131.0 KB Created: 2020-11-16 18:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 47bcf647ef6da77bc46e66edeb9ba000 SHA-1: 1838d5f31ebea352d189a39308a06154a38903ef SHA-256: 290ab6e209af1e7f9d4b0c204cc87f900e54cf00907905e3378a5044d132e227

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://traffmen.ru/123?utm_term=best+way+to+stream+nba+games+reddit'. Additionally, a machine learning classifier and ClamAV both flagged the file as malicious, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to streaming NBA games, likely a lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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://traffmen.ru/123?utm_term=best+way+to+stream+nba+games+reddit In PDF document text
- https://cdn-cms.f-static.net/uploads/4412378/normal_5f978955c0ef4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420239/normal_5fabb59d8d613.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386852/normal_5fb2786206a09.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/matogapibelifiv/fubufevobekigutabigejabon.pdfIn PDF document text
- https://s3.amazonaws.com/tajimipojimo/40888820312.pdfIn PDF document text
- https://s3.amazonaws.com/xukonakefules/80081564108.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/navafemejapufolinile.pdfIn PDF document text
- https://s3.amazonaws.com/tobobowu/pnp_information_report_sample.pdfIn PDF document text
- https://s3.amazonaws.com/jolituzoji/riot_shotgun_fallout_4.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_off0001bebd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1BEBD	5496 bytes
SHA-256: `4cd3633ae24d4f9e87a6a65177756c8d9e3947b32f1624e77776e424aa66f42a`
`font_01_sfnt_off0001d170.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1D170	14240 bytes
SHA-256: `11bc25d85099c2b5b66b23c5754e1e1f0612147a6a0c8d0cd7fc2051e9a02424`

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