PDF malware analysis — malicious · 177c5cf0713be604

MALICIOUS

PDF

153.9 KB Created: 2020-12-25 15:03:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 03e80b3ee77bf7bf6c14635436a3ec31 SHA-1: e804b12197144d33a17cdd4c4b91ffbd5a4b2987 SHA-256: 177c5cf0713be604b44d46580b05c84b794c0ad2719d8557ef197a4728ba01e3

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate the presence of malicious content designed to redirect the user.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

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://trafffi.ru/123?utm_term=queen%2527s+blade+ova+5+cattleya+eng
- https://cdn-cms.f-static.net/uploads/4370778/normal_5fb9785b8f898.pdf
- https://cdn.sqhk.co/gujadozede/d2jfSgg/bob_the_robber_4_hacked_arcadeprehacks.pdf
- https://cdn.sqhk.co/dakuwuwuzije/egchhi0/61972956667.pdf
- https://static.s123-cdn-static.com/uploads/4402014/normal_5fde52ef1a5c5.pdf
- https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/rujubawafezepir-juvewipapa-misimova-zavizixi.pdf
- https://static.s123-cdn-static.com/uploads/4417207/normal_5fe1047cf1085.pdf
- https://fezemopozopedet.weebly.com/uploads/1/3/5/3/135326879/kubawosa_wivupikamo.pdf
- https://cdn-cms.f-static.net/uploads/4365659/normal_5f86f656c66f7.pdf
- https://cdn-cms.f-static.net/uploads/4424376/normal_5f9d79d37616f.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/bugutaj/academic_vocabulary_in_use_edition_with_answers_2nd_edition.pdf
- https://s3.amazonaws.com/bezutu/6123204575.pdf
- https://s3.amazonaws.com/wutogugej/china_authentication_application_form.pdf
- https://s3.amazonaws.com/babuxufarizuxur/fast_learner_synonym.pdf
- https://s3.amazonaws.com/fosawef/stoker_hd_movie.pdf
- https://s3.amazonaws.com/wibadinavosunom/la_times_crossword_answers_9_4_19.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00016db1.bin` `e2c52cefe5f3dae3361ab717277a9afe64b660c7b8f2ea6ec123f3e79d80e2cc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x16DB1	59592 bytes
`font_01_sfnt_off000220b3.bin` `91e8a7833ae0ff3ca96d93fba8752b1501e5dcb1746d02fa4b36594a48c287e4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x220B3	5532 bytes
`font_02_sfnt_off000233b6.bin` `0e7447a663710395547b4c2bcf7b94dfe09479eb5f07d43c40c43037ee7d7555`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x233B6	11496 bytes

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