Malicious PDF — malware analysis report

Static analysis result for SHA-256 084a6ce7b19db67b…

MALICIOUS

PDF

73.6 KB Created: 2021-03-13 21:05:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16d8af84fc3cf8cd444a63106c863015 SHA-1: 7e231a0e35042a457f8b25d88492758849b9da94 SHA-256: 084a6ce7b19db67b708e621895c83b7c5e194f2e56ba9555ce01dc265e5abc13
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. It contains a large number of external links, many hosted on Weebly and other platforms, suggesting a link farm or redirection mechanism to distribute malicious content. The document body, though heavily obfuscated, appears to be a lure related to a 'Romeo and Juliet movie study guide worksheet', indicating a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/wix?keyword=romeo+and+juliet+movie+study+guide+worksheet
    • https://xegazoniwenopuk.weebly.com/uploads/1/3/6/0/136011370/4611430.pdf
    • https://dipilewojariwu.weebly.com/uploads/1/3/2/8/132814651/8fbf93.pdf
    • https://cdn.sqhk.co/nanagajog/dnjhlhc/63908449329.pdf
    • https://dedotomonifagax.weebly.com/uploads/1/3/1/6/131606429/lusejetumufisod-rotexug.pdf
    • https://pamimimafe.weebly.com/uploads/1/3/0/7/130775080/2883e.pdf
    • https://gagakulusete.weebly.com/uploads/1/3/5/3/135326625/vepinavisasesopisemi.pdf
    • https://cdn.sqhk.co/miwizawi/cjiHpMW/car_race_games_for_pc_windows_7.pdf
    • https://cdn.sqhk.co/nowonipewo/jihaCd9/dominos_pizza_party_package.pdf
    • https://revowerixes.weebly.com/uploads/1/3/1/6/131607662/9d86fb4d2b.pdf
    • https://gokasesebigi.weebly.com/uploads/1/3/3/9/133986942/af0217670.pdf
    • https://tezijiso.weebly.com/uploads/1/3/4/6/134690371/sadis_sotutaki.pdf
    • https://nivumumati.weebly.com/uploads/1/3/4/7/134703955/jivufefa-keferutoroman-nalemo-zewigitapuki.pdf
    • https://puzifisabu.weebly.com/uploads/1/3/1/3/131378936/kogabepekasavi.pdf
    • https://cdn.sqhk.co/kuzetuzame/pYSidgh/ruruvutetale.pdf
    • https://vijizonumek.weebly.com/uploads/1/3/6/0/136034009/gamebagut.pdf
    • https://dukupifit.weebly.com/uploads/1/3/0/7/130775427/731042.pdf
    • https://sagakoto.weebly.com/uploads/1/3/0/8/130814189/gotenotovumibijus.pdf
    • https://cdn.sqhk.co/vasegodesazu/hja6oig/funny_video_clips_for_mobile_phones_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://1dab3517-3db0-43ff-9fd6-b65b51f65b60.filesusr.com/ugd/565485_343203fd0dcd429caa957954b1ed2719.pdf?index=true
    • https://5a060084-92f5-4e09-b02e-bbac8bb45871.filesusr.com/ugd/05c943_b8f45cf3ab9d4f71b5f8138429152eea.pdf?index=true
    • https://c1e70603-6ca1-47bc-880b-b60d7d434995.filesusr.com/ugd/df625d_c5bef705508043848196b45b3403c988.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e023.bin
4fb2d28155517512536207e30e989b707e47febfb324aacce155a6740e62def9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE023 5640 bytes
font_01_sfnt_off0000f34e.bin
5d797a7c5f9cd745bf56b2e82390bc095271444493da0b22c059351f957d7c59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF34E 11104 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.